Borg Mechanical Digital BL4409MGProECP - Rim Fixed Slam Latch - Marine Grade Pro - Easicode - Black
At A Glance
At A Glance
DISPATCHSame Day Before 11am
PIN Code 
Key OverrideNot Available
The Borg BL4409 MG Pro ECP is a fully mechanical digital marine grade gate lock built for situations where the standard approach - boring through the door edge for a tubular latch - is simply not possible. Whether the gate post stile is too narrow, too thin, or hollow section, the BL4409 solves it with a rim-fixed slam latch that surface-mounts to the face of the gate. There is no mortice pocket to cut, no boring through the edge. The keypad lever sits outside; the slam latch body - with its turn knob and snib - sits inside. When the gate swings shut, the slam latch auto-engages. Enter the code, the external lever clutches free and retracts the bolt.
Two strike plates ship in the box - a face-mounted rim-fixed plate for standard installations, and a concealed fix alternative for inward-opening gates where a cleaner finish is preferred. The lock suits gate thicknesses up to 85mm using the supplied spindle bar, cut to length on site. Marine Grade Pro construction (316 stainless internals, MG Pro black coating, 1,000 hours salt spray) makes this the correct coastal and beachside pick in the gate lock range. Easicode Pro (ECP) means the PIN changes on the gate in seconds - no lock removal, no workbench.
Estimated Warehouse Dispatch
Usually same day if ordered before 11am AEST (excluding weekends and Qld public holidays)
Usually same day if ordered before 11am AEST (excluding weekends and Qld public holidays)
Rim-Fixed Slam Latch - No Boring Through the Door Edge Required
The BL4409 uses a rim-fixed slam latch in place of a conventional tubular mortice latch. It surface-mounts to the face of the gate - only three small through-holes are needed for the spindle bar and fixings. There is no inside lever handle; inside operation is via the turn knob on the slam latch body. This is the correct pick where the gate stile is too narrow, too thin, or hollow section for a conventional latch. If your gate post takes a standard 60mm latch, see the BL4401MGPROECP instead. For help deciding, our narrow gate post guide maps every option.
The BL4409 uses a rim-fixed slam latch in place of a conventional tubular mortice latch. It surface-mounts to the face of the gate - only three small through-holes are needed for the spindle bar and fixings. There is no inside lever handle; inside operation is via the turn knob on the slam latch body. This is the correct pick where the gate stile is too narrow, too thin, or hollow section for a conventional latch. If your gate post takes a standard 60mm latch, see the BL4401MGPROECP instead. For help deciding, our narrow gate post guide maps every option.
Marine Grade Pro - 316 Stainless Steel - 1,000 Hour Salt Spray Tested
316 stainless steel internal components with MG Pro black marine external grade coating, tested to 1,000 continuous hours of salt spray. Suitable for coastal, beachside, canal-front, and marine environments where standard finishes corrode prematurely. The salt spray hours explained and the honest brand corrosion comparison are worth reading before specifying for any harsh environment.
316 stainless steel internal components with MG Pro black marine external grade coating, tested to 1,000 continuous hours of salt spray. Suitable for coastal, beachside, canal-front, and marine environments where standard finishes corrode prematurely. The salt spray hours explained and the honest brand corrosion comparison are worth reading before specifying for any harsh environment.
Corrosion Resistance Warranted - 12 Months
Borg warrants corrosion resistance for 12 months from date of sale under specified conditions. A regular silicon-lubricant wipe-down (monthly for coastal) keeps the lock inside those conditions - see Additional Information for the maintenance schedule.
Borg warrants corrosion resistance for 12 months from date of sale under specified conditions. A regular silicon-lubricant wipe-down (monthly for coastal) keeps the lock inside those conditions - see Additional Information for the maintenance schedule.
Easicode Pro - On-Door/Gate Code Change
The PIN can be changed while the lock is on the gate using the included code change key. Insert the key into the hole in the * (asterisk) button, hold it fully pressed, press C to clear, enter the new code, confirm, then release. No lock removal, no workbench. An optional code change disabling plug is included to prevent unauthorised code changes after the code is set. Full steps and video are in our Borg ECP code change guide.
The PIN can be changed while the lock is on the gate using the included code change key. Insert the key into the hole in the * (asterisk) button, hold it fully pressed, press C to clear, enter the new code, confirm, then release. No lock removal, no workbench. An optional code change disabling plug is included to prevent unauthorised code changes after the code is set. Full steps and video are in our Borg ECP code change guide.
The included Easicode Pro change key (blue, BL2000ECPCK - spares available) inserts into the hole at the * button to trigger the on-door code change procedure - no removal from the gate.
Inside Holdback and Inside Deadlock - Both Via the Snib - Both Deactivatable
The slam latch body carries a snib on its back edge. Sliding it one way holds the latch bolt withdrawn (holdback) - useful for propped open periods and active throughput without code entry. Sliding it the other way deadlocks the bolt (inside deadlock) - code entry from outside is then blocked entirely. If neither function is wanted, both are permanently deactivated by fitting the supplied dome head screws. Our guide to passage mode vs holdback mode explains where holdback belongs (and the pool gate exception - see below).
The slam latch body carries a snib on its back edge. Sliding it one way holds the latch bolt withdrawn (holdback) - useful for propped open periods and active throughput without code entry. Sliding it the other way deadlocks the bolt (inside deadlock) - code entry from outside is then blocked entirely. If neither function is wanted, both are permanently deactivated by fitting the supplied dome head screws. Our guide to passage mode vs holdback mode explains where holdback belongs (and the pool gate exception - see below).
Fully Mechanical - No Batteries Required
Entirely mechanical. No power source, no wiring, no flat-battery lockouts, and no battery maintenance at any point. The reason coastal gate applications overwhelmingly favour mechanical digital over smart locks is spelled out in our gate section of the mech-digi explainer.
Entirely mechanical. No power source, no wiring, no flat-battery lockouts, and no battery maintenance at any point. The reason coastal gate applications overwhelmingly favour mechanical digital over smart locks is spelled out in our gate section of the mech-digi explainer.
Designed for light to medium usage gate and outbuilding applications - residential and light commercial gates where the stile geometry rules out a conventional mortice latch.
Not suitable for high traffic commercial use
For heavy duty consider the Lockwood 3572DX, Borg BL7701, or Carbine CDL7200.
For heavy duty consider the Lockwood 3572DX, Borg BL7701, or Carbine CDL7200.
Single PIN Code Only
Accepts one active PIN code at a time - everyone shares the same code, with no audit trail. That trade-off is inherent to the mechanical digital category; our honest limitations rundown covers it fully.
Accepts one active PIN code at a time - everyone shares the same code, with no audit trail. That trade-off is inherent to the mechanical digital category; our honest limitations rundown covers it fully.
Key Features
- Rim-fixed slam latch - surface mounted to the face of the door or gate; no boring through the door edge required.
- External clutching lever - free-turning until the correct code is entered, then retracts the slam latch bolt.
- Inside operation via turn knob on the slam latch body - no inside lever handle on this model.
- Holdback function - slide the snib on the slam latch body to hold the bolt withdrawn for free passage without code entry.
- Inside deadlock function - same snib engaged in the opposite direction deadlocks the bolt, blocking outside code entry entirely.
- Both holdback and deadlock can be permanently deactivated using the supplied dome head screws and washers if neither is required.
- Two strike plates supplied: rim-fixed (standard, face-mounted) and concealed fix rim strike (alternative, inward-opening gates).
- Easicode Pro (ECP) on-door/gate code change using the included BL2000ECPCK change key - no lock removal required; optional code change disabling plug included.
- Marine Grade Pro (MG Pro 2) black external coating - 316 stainless steel internal components.
- 1,000 hour continuous salt spray tested; corrosion resistance warranted 12 months.
- Fully mechanical - no batteries, no wiring, no power source.
- Over 4,000 non-sequential (any-order) code combinations; 14-button keypad (12 coded digits, C clear, * code change).
- 40mm backset rim-mount latch.
- Suitable for gate and door thicknesses up to 85mm - spindle bar supplied and cut to length on site.
- Reversible on site - slam latch hand changeable for left or right hand swing.
- Not available in back-to-back configuration (see BL4441MGPROECP for the BTB version).
- Shares the same footprint as the BL2600 and BL2600 ECP series - drop-in upgrade for existing BL2600 installations.
Access Methods
App / Bluetooth
What's in the Box
- Borg BL4409 MG Pro ECP digital keypad unit (external lever, MG Pro black coating)
- Rim-fixed slam latch body with turn knob and holdback/deadlock snib (MG Pro black coating)
- Rim-fixed strike plate (standard - face-mounted to gate post frame)
- Concealed fix rim strike plate (alternative - for inward-opening gates)
- Spindle bar (cut to length on site; suits up to 85mm gate/door thickness)
- Slam latch mounting screws (x4)
- Easicode Pro code change key (BL2000ECPCK)
- Optional code change disabling plug
- Holdback/deadlock deactivation dome head screws and washers
- Wood screws for rim-fixed strike plate (x2)
- Wood screws for concealed fix strike plate (x3)
- Fixings and installation hardware
Suitable Uses
- External gates with frames too narrow, too thin, or hollow section for a conventional tubular mortice latch - read the narrow stile guide first
- Timber, composite, or aluminium gates where face-mounting is required or preferred
- Storage areas, pool plant rooms, utility hatches, and outbuildings requiring marine-grade keyless access in coastal environments
- Applications where an auto-latching slam action is required without mortice installation
- Sites where an inside deadlock function is needed to supplement external code entry
- Replacement installations matching the BL2600 or BL2600 ECP series footprint
- The gates section of Buyer's Guide Chapter 16 and the blog on why our mech-digi range suits gates have useful framing for gate applications
Available Finish Options
Black MG Pro
(This Product)
STK BL4409MGPROECP
Single finish listing. The BL4400 series is available in Black MG Pro only. The complete gate lock family (including the tubular latch BL4401MGPROECP and back-to-back BL4441MGPROECP) all share this finish - see the range table below.
BL4400 Gate Lock Family - Where This Model Sits
Four mechanically distinct locking devices; same MG Pro black lever keypad on all. The key decisions: latch format (tubular vs narrow stile vs rim slam vs BTB), whether holdback is needed, and whether one or both sides of the gate need code access.
For the reach-over problem and why two-sided code entry matters on gates, see why double-sided locks suit gates.
Spare Parts and Accessories
Genuine spare part availability is one of the honest differences between this range and hardware store imitations - our spare parts comparison explains why it matters at year five. Browse all replacement keypads and scar and adaptor plates.
Full Specifications
Dimensions
Front keypad dimensions - BL4409 MG Pro ECP
Rear slam latch dimensions - BL4409 MG Pro ECP
Frequently Asked Questions
Why choose the BL4409 over the BL4401?
The BL4401MGPROECP uses a tubular mortice latch requiring the gate to have enough material to bore through the edge. If the gate stile is too narrow, too thin, or is hollow section aluminium where a tubular latch won't grip, the BL4409 is the right answer: its rim-fixed slam latch mounts to the face, needing only three through-holes. The other key difference is inside operation - the BL4401 has a free inside lever handle; the BL4409 has a turn knob on the slam latch body (no inside lever at all). Our narrow gate post guide covers all four options for thin stiles.
The BL4401MGPROECP uses a tubular mortice latch requiring the gate to have enough material to bore through the edge. If the gate stile is too narrow, too thin, or is hollow section aluminium where a tubular latch won't grip, the BL4409 is the right answer: its rim-fixed slam latch mounts to the face, needing only three through-holes. The other key difference is inside operation - the BL4401 has a free inside lever handle; the BL4409 has a turn knob on the slam latch body (no inside lever at all). Our narrow gate post guide covers all four options for thin stiles.
What is the holdback/deadlock function and how does it work?
The slam latch body has a snib on its back edge. Rotate the turn knob and slide the snib in one direction - holdback: the latch bolt stays retracted, the gate opens freely without code entry. Slide it the other way - inside deadlock: the latch bolt is locked and outside code entry is blocked entirely, useful when an authorised person inside needs to prevent all external access. If neither function is wanted, fit the supplied dome head screws to permanently disable both. The broader context on holdback vs passage mode is in our dedicated blog.
The slam latch body has a snib on its back edge. Rotate the turn knob and slide the snib in one direction - holdback: the latch bolt stays retracted, the gate opens freely without code entry. Slide it the other way - inside deadlock: the latch bolt is locked and outside code entry is blocked entirely, useful when an authorised person inside needs to prevent all external access. If neither function is wanted, fit the supplied dome head screws to permanently disable both. The broader context on holdback vs passage mode is in our dedicated blog.
Which strike plate should I use?
Both are in the box - only one gets fitted. The rim-fixed strike plate (standard) is face-mounted to the gate post frame and suits most installations. The concealed fix rim strike plate is the alternative for inward-opening gates where a cleaner look is preferred, requiring 3 fixing holes rather than 2. Decide before drilling. If the post is aluminium hollow section, the concealed fix version is often better for purchase.
Both are in the box - only one gets fitted. The rim-fixed strike plate (standard) is face-mounted to the gate post frame and suits most installations. The concealed fix rim strike plate is the alternative for inward-opening gates where a cleaner look is preferred, requiring 3 fixing holes rather than 2. Decide before drilling. If the post is aluminium hollow section, the concealed fix version is often better for purchase.
How do I determine the correct spindle bar length?
The spindle bar is cut to length on site. Formula: gate/door thickness + 35mm. For a 40mm thick gate, cut to 75mm total. Always cut from the slam latch side, not the keypad side. The supplied bar suits thicknesses up to 85mm.
The spindle bar is cut to length on site. Formula: gate/door thickness + 35mm. For a 40mm thick gate, cut to 75mm total. Always cut from the slam latch side, not the keypad side. The supplied bar suits thicknesses up to 85mm.
How do I change the PIN code?
With the gate in the open position, enter the current code. Insert the included Easicode Pro change key into the hole in the * button and hold it fully pressed. Press C to clear the old code, enter the new code digits, then press them again to confirm. Release the key from the * button, then press C or rotate the lever to finalise. Test the new code at least five times before closing the gate. Spare change keys (BL2000ECPCK) are available separately. Codes are non-sequential - if set to 1234, then 4321 and 2413 also open the gate. Full steps with photos at our ECP step-by-step guide.
With the gate in the open position, enter the current code. Insert the included Easicode Pro change key into the hole in the * button and hold it fully pressed. Press C to clear the old code, enter the new code digits, then press them again to confirm. Release the key from the * button, then press C or rotate the lever to finalise. Test the new code at least five times before closing the gate. Spare change keys (BL2000ECPCK) are available separately. Codes are non-sequential - if set to 1234, then 4321 and 2413 also open the gate. Full steps with photos at our ECP step-by-step guide.
Additional Information
Same Footprint as BL2600 and BL2600 ECP Series:
The BL4409 MG Pro ECP shares the same external keypad footprint as the BL2600 and BL2600 ECP series, making it a direct upgrade for existing BL2600 installations without filling or re-drilling the door face. Confirm the slam latch mounting hole positions before ordering as a replacement. Swapping from a different footprint instead? Scar plates cover old hardware marks on gates and aluminium doors.
The BL4409 MG Pro ECP shares the same external keypad footprint as the BL2600 and BL2600 ECP series, making it a direct upgrade for existing BL2600 installations without filling or re-drilling the door face. Confirm the slam latch mounting hole positions before ordering as a replacement. Swapping from a different footprint instead? Scar plates cover old hardware marks on gates and aluminium doors.
Changing the Hand of the Slam Latch:
Factory set for right-hand hung gates (gate opens inward, hinges on right, viewed from the keypad side). The slam latch hand is changed on site by rotating the latch body. Handing guide from the keypad side: RH = hinges on right, opens inward; LH = hinges on left, opens inward; RH Reverse = hinges on right, opens outward; LH Reverse = hinges on left, opens outward. Our door handing guide has the full explainer.
Factory set for right-hand hung gates (gate opens inward, hinges on right, viewed from the keypad side). The slam latch hand is changed on site by rotating the latch body. Handing guide from the keypad side: RH = hinges on right, opens inward; LH = hinges on left, opens inward; RH Reverse = hinges on right, opens outward; LH Reverse = hinges on left, opens outward. Our door handing guide has the full explainer.
Marine Grade Maintenance:
Monthly: clean the keypad and lever surfaces with a light spray of silicon-based lubricant (GT85 or equivalent); wipe off excess with a soft cloth. Do not use oil-based lubricants. Annually: remove the lock, spray internally through the button holes, and test all buttons and lever operation. Full schedule in the Borg Servicing Guide. How maintained Borg MG Pro hardware compares against the other brands over time is covered in our honest corrosion comparison.
Monthly: clean the keypad and lever surfaces with a light spray of silicon-based lubricant (GT85 or equivalent); wipe off excess with a soft cloth. Do not use oil-based lubricants. Annually: remove the lock, spray internally through the button holes, and test all buttons and lever operation. Full schedule in the Borg Servicing Guide. How maintained Borg MG Pro hardware compares against the other brands over time is covered in our honest corrosion comparison.
Pool Barrier Gate Compliance Note:
The BL4409 auto-latches when the gate swings shut via the slam latch action, which aligns with the self-latching requirement under the Queensland Pool Safety Standard. However, if the holdback snib is left engaged, the gate cannot self-latch - a direct barrier compliance breach. Either deactivate the holdback permanently using the supplied dome head screws, or ensure the holdback is never left engaged on a pool barrier gate. Our pool gates compliance guide and the holdback/pool-gate ruling have the detail. Confirm compliance with a licensed pool safety inspector before installation.
The BL4409 auto-latches when the gate swings shut via the slam latch action, which aligns with the self-latching requirement under the Queensland Pool Safety Standard. However, if the holdback snib is left engaged, the gate cannot self-latch - a direct barrier compliance breach. Either deactivate the holdback permanently using the supplied dome head screws, or ensure the holdback is never left engaged on a pool barrier gate. Our pool gates compliance guide and the holdback/pool-gate ruling have the detail. Confirm compliance with a licensed pool safety inspector before installation.
Why Magnetic Latches and Slam Latches Don't Compete:
A common question on narrow-stile gates is whether a magnetic latch would be simpler. They work mechanically but have a significantly higher revisit rate than physical latches (the BL4409's slam latch positively engages; a magnet can miss-align if the post moves or the gate shifts). For any gate where auto-latching reliability matters - particularly pool barriers - a physical slam latch is the stronger choice.
A common question on narrow-stile gates is whether a magnetic latch would be simpler. They work mechanically but have a significantly higher revisit rate than physical latches (the BL4409's slam latch positively engages; a magnet can miss-align if the post moves or the gate shifts). For any gate where auto-latching reliability matters - particularly pool barriers - a physical slam latch is the stronger choice.
Borg Locks Warranty - 12 Months (Australia)
All Borg locks are warranted against mechanical defects in materials and workmanship under normal use and service for a minimum of 12 months from date of sale. The warranty does not cover damage arising from misuse, vandalism, or improper installation, and the lock must not be dismantled - doing so will invalidate the warranty.
All Borg locks are warranted against mechanical defects in materials and workmanship under normal use and service for a minimum of 12 months from date of sale. The warranty does not cover damage arising from misuse, vandalism, or improper installation, and the lock must not be dismantled - doing so will invalidate the warranty.
Purchased through Terry's Locksmiths or one of its trading brands? Contact Terry's Locksmiths first - we'll manage your warranty claim with the Australian distributor on your behalf. This warranty operates alongside your rights under the Australian Consumer Law.
BL4409 MG Pro ECP - Full FAQ
The Rim Slam Latch Format
What exactly is a rim-fixed slam latch and why does it exist?
Most mechanical digital gate locks drive a tubular latch that bores through the gate stile edge. That works fine on 90x90mm timber posts or wide aluminium section. But a huge number of Australian gates have 50x50mm or 65x65mm aluminium hollow stiles - too narrow for a 60mm latch, and hollow-section to boot. The rim-fixed slam latch solves it by mounting to the face of the gate instead of the edge: the latch body sits behind the gate, the bolt engages the strike on the post frame, and you need only three small through-holes for the spindle and fixings. It is specifically designed for the narrow-stile gate problem. Our narrow gate stile guide maps all four solutions (short backset, forend fixing, box/rim mounting - this model - and modifying the gate), and how to measure your stile before deciding.
Most mechanical digital gate locks drive a tubular latch that bores through the gate stile edge. That works fine on 90x90mm timber posts or wide aluminium section. But a huge number of Australian gates have 50x50mm or 65x65mm aluminium hollow stiles - too narrow for a 60mm latch, and hollow-section to boot. The rim-fixed slam latch solves it by mounting to the face of the gate instead of the edge: the latch body sits behind the gate, the bolt engages the strike on the post frame, and you need only three small through-holes for the spindle and fixings. It is specifically designed for the narrow-stile gate problem. Our narrow gate stile guide maps all four solutions (short backset, forend fixing, box/rim mounting - this model - and modifying the gate), and how to measure your stile before deciding.
There is no inside lever handle - how do I open the gate from inside?
Via the turn knob on the slam latch body, which is mounted to the inside face of the gate. Rotate it to retract the latch bolt and open the gate. There is no clutching action on this knob - it operates freely without any code. Think of it as the equivalent of the inside free lever on a BL4401MGPROECP; same function, different hardware form because the rim slam format doesn't carry an inside handle. If reach-over bypass is a concern on your gate (someone reaching over to work the knob), that is exactly the problem the back-to-back BL4441MGPROECP solves - see the single-sided problem explained.
Via the turn knob on the slam latch body, which is mounted to the inside face of the gate. Rotate it to retract the latch bolt and open the gate. There is no clutching action on this knob - it operates freely without any code. Think of it as the equivalent of the inside free lever on a BL4401MGPROECP; same function, different hardware form because the rim slam format doesn't carry an inside handle. If reach-over bypass is a concern on your gate (someone reaching over to work the knob), that is exactly the problem the back-to-back BL4441MGPROECP solves - see the single-sided problem explained.
Does the slam latch work reliably on a gate that moves or flexes?
The slam latch is more forgiving of minor gate flex or post movement than a tubular latch (a tubular latch in a tight mortice pocket can bind; the slam latch bolt contacts the strike at the face). It is less forgiving than a magnetic latch, but magnetic latches have a roughly 50 percent revisit rate for realignment - gates move seasonally and magnets miss. For most residential gates, the slam latch is the more reliable long-term choice - just ensure the post frame is stable and the strike is positioned correctly at install.
The slam latch is more forgiving of minor gate flex or post movement than a tubular latch (a tubular latch in a tight mortice pocket can bind; the slam latch bolt contacts the strike at the face). It is less forgiving than a magnetic latch, but magnetic latches have a roughly 50 percent revisit rate for realignment - gates move seasonally and magnets miss. For most residential gates, the slam latch is the more reliable long-term choice - just ensure the post frame is stable and the strike is positioned correctly at install.
How do the any-order codes work, and is 4,000 combinations enough?
Codes are non-sequential: each coded button is pressed once, in any order. If the code uses buttons 2, 5, and 8, then 258, 852, and 582 all open the gate. That is inherent to the mechanical coding chamber design, and it is why the honest figure is "over 4,000" rather than the millions an electronic keypad quotes. In practice it is ample for a gate: an attacker standing at a coastal gate grinding through thousands of combinations is not the realistic threat model - key sharing and shoulder-surfing are, and those are managed by changing the code regularly (10 seconds with ECP). The full honest treatment is in our any-order codes explainer.
Codes are non-sequential: each coded button is pressed once, in any order. If the code uses buttons 2, 5, and 8, then 258, 852, and 582 all open the gate. That is inherent to the mechanical coding chamber design, and it is why the honest figure is "over 4,000" rather than the millions an electronic keypad quotes. In practice it is ample for a gate: an attacker standing at a coastal gate grinding through thousands of combinations is not the realistic threat model - key sharing and shoulder-surfing are, and those are managed by changing the code regularly (10 seconds with ECP). The full honest treatment is in our any-order codes explainer.
Holdback, Deadlock, and Pool Gates
Can I use this on a pool safety barrier gate?
The slam latch auto-engages when the gate swings shut, which meets the self-latching requirement. The BL4409 is suitable for pool barrier use provided the holdback function is permanently deactivated using the supplied dome head screws - if holdback is left accessible, anyone could engage it and prevent self-latching. With holdback deactivated, the gate self-latches on every close and the keypad controls entry from outside. Confirm with a licensed pool safety inspector before installation, and read the canonical pool gate compliance treatment plus the holdback/pool-gate ruling.
The slam latch auto-engages when the gate swings shut, which meets the self-latching requirement. The BL4409 is suitable for pool barrier use provided the holdback function is permanently deactivated using the supplied dome head screws - if holdback is left accessible, anyone could engage it and prevent self-latching. With holdback deactivated, the gate self-latches on every close and the keypad controls entry from outside. Confirm with a licensed pool safety inspector before installation, and read the canonical pool gate compliance treatment plus the holdback/pool-gate ruling.
What is the inside deadlock and when would I use it?
The same snib that controls holdback can be engaged in the opposite direction to deadlock the latch bolt - code entry from outside no longer opens the gate. This is an inside-only function: an authorised person in the yard can lock everyone else out entirely. Useful for plant rooms, utility hatches, or storage areas where after-hours interior security matters. If you never need it, fit the dome head screws to permanently disable both holdback and deadlock. Where holdback genuinely belongs - and the exit-path caution that comes with any lockout function - is covered in when to use holdback and exit paths.
The same snib that controls holdback can be engaged in the opposite direction to deadlock the latch bolt - code entry from outside no longer opens the gate. This is an inside-only function: an authorised person in the yard can lock everyone else out entirely. Useful for plant rooms, utility hatches, or storage areas where after-hours interior security matters. If you never need it, fit the dome head screws to permanently disable both holdback and deadlock. Where holdback genuinely belongs - and the exit-path caution that comes with any lockout function - is covered in when to use holdback and exit paths.
How do I permanently deactivate the holdback and deadlock?
Fit the supplied dome head screws and washers into the snib travel slots on the slam latch body - a two-minute job with a screwdriver, done at installation or any time after. Once fitted, the snib cannot be slid in either direction: no holdback, no inside deadlock, and the latch simply auto-engages every time the gate closes. The screws are reversible if requirements change later. For pool barrier gates, fit them at installation and note it on the compliance paperwork.
Fit the supplied dome head screws and washers into the snib travel slots on the slam latch body - a two-minute job with a screwdriver, done at installation or any time after. Once fitted, the snib cannot be slid in either direction: no holdback, no inside deadlock, and the latch simply auto-engages every time the gate closes. The screws are reversible if requirements change later. For pool barrier gates, fit them at installation and note it on the compliance paperwork.
Installation and Code Change
How hard is this to install compared to a BL4401?
Easier in some ways, different in others. No mortice boring and no latch body through the edge - the three through-holes are straightforward. The extra step is fitting the rim slam latch body flush to the inside face of the gate and positioning the strike plate on the post frame so the bolt engages cleanly. Handing the slam latch adds a step not present on the BL4401. On a hollow aluminium stile it is also worth checking what backing material is available for the fixings - thin-wall aluminium needs care. Overall: a competent DIYer can install it; first-timers on challenging gates should involve a locksmith or fencer. Our advice and installation service covers the Gold Coast.
Easier in some ways, different in others. No mortice boring and no latch body through the edge - the three through-holes are straightforward. The extra step is fitting the rim slam latch body flush to the inside face of the gate and positioning the strike plate on the post frame so the bolt engages cleanly. Handing the slam latch adds a step not present on the BL4401. On a hollow aluminium stile it is also worth checking what backing material is available for the fixings - thin-wall aluminium needs care. Overall: a competent DIYer can install it; first-timers on challenging gates should involve a locksmith or fencer. Our advice and installation service covers the Gold Coast.
How do I cut the spindle bar to the right length?
Formula: gate/door thickness + 35mm, cut from the slam latch side (never the keypad side). For a 40mm gate, cut the bar to 75mm; for a 70mm gate, 105mm. Measure twice - a spindle cut too short will not engage the slam latch follower reliably and can slip if the gate is slammed. The supplied bar covers thicknesses up to 85mm. A hacksaw and a file to deburr is all that is needed.
Formula: gate/door thickness + 35mm, cut from the slam latch side (never the keypad side). For a 40mm gate, cut the bar to 75mm; for a 70mm gate, 105mm. Measure twice - a spindle cut too short will not engage the slam latch follower reliably and can slip if the gate is slammed. The supplied bar covers thicknesses up to 85mm. A hacksaw and a file to deburr is all that is needed.
Can the code change key be lost - and what happens if it is?
The Easicode Pro code change key is a separate physical item (item code BL2000ECPCK - the blue key pictured in the ECP section on the main tab). It is a tool, not a credential - the code is set by the tumblers, not the key, so a lost key does not compromise security. It just means you cannot change the code until you get a replacement, which is a stocked spare part. Sites with multiple Borg ECP locks keep one key in the office - any Borg ECP change key operates any Borg ECP coding chamber. Background on spare change keys and how the ECP change key works.
The Easicode Pro code change key is a separate physical item (item code BL2000ECPCK - the blue key pictured in the ECP section on the main tab). It is a tool, not a credential - the code is set by the tumblers, not the key, so a lost key does not compromise security. It just means you cannot change the code until you get a replacement, which is a stocked spare part. Sites with multiple Borg ECP locks keep one key in the office - any Borg ECP change key operates any Borg ECP coding chamber. Background on spare change keys and how the ECP change key works.
What if the code is forgotten?
The BL4409 uses the same Easicode Pro coding chamber as the rest of the BL4000/BL2000 ECP range. In the event of a lost code, the lock needs to come off the gate: with the keypad removed and turned over, the set code can be identified by reading the portholes on the back of the coding unit - the ECP Code Change Instructions PDF has the porthole-reading procedure on page 2. Terry can do this; call before assuming a replacement is needed. Rule one of code management remains: know the current code before you need it.
The BL4409 uses the same Easicode Pro coding chamber as the rest of the BL4000/BL2000 ECP range. In the event of a lost code, the lock needs to come off the gate: with the keypad removed and turned over, the set code can be identified by reading the portholes on the back of the coding unit - the ECP Code Change Instructions PDF has the porthole-reading procedure on page 2. Terry can do this; call before assuming a replacement is needed. Rule one of code management remains: know the current code before you need it.
Coastal Life and Maintenance
How does MG Pro actually hold up on a beachfront gate?
MG Pro is Borg's marine specification: 316 stainless steel internal components under the MG Pro 2 black external coating, tested to 1,000 continuous hours of salt spray. That testing figure is directly comparable across brands - salt spray hours explained puts it in AS 4145.2 terms, and the honest three-brand corrosion comparison shows where Borg's published figures sit against Lockwood and Carbine. The caveat that matters: salt spray hours assume a maintained lock. Skip the monthly silicon wipe-down on a front-line coastal gate and any finish will lose the fight early. The schedule is in Additional Information on the main tab and the Borg Servicing Guide.
MG Pro is Borg's marine specification: 316 stainless steel internal components under the MG Pro 2 black external coating, tested to 1,000 continuous hours of salt spray. That testing figure is directly comparable across brands - salt spray hours explained puts it in AS 4145.2 terms, and the honest three-brand corrosion comparison shows where Borg's published figures sit against Lockwood and Carbine. The caveat that matters: salt spray hours assume a maintained lock. Skip the monthly silicon wipe-down on a front-line coastal gate and any finish will lose the fight early. The schedule is in Additional Information on the main tab and the Borg Servicing Guide.
Why battery-free instead of a smart lock on a gate?
Gates are the environment smart locks like least: full weather exposure, wide temperature swings, no wiring, and owners who do not want to change batteries at the far end of the yard. A mechanical digital lock has no electronics to fail, nothing for rain or salt air to short, and no flat-battery lockouts - at the cost of one shared code and no audit trail. For gates it is rarely a close call; why mech-digi dominates on gates and the realities of electronic locks make the case honestly. Borg's battery-free brand story is in Buyer's Guide Chapter 10.
Gates are the environment smart locks like least: full weather exposure, wide temperature swings, no wiring, and owners who do not want to change batteries at the far end of the yard. A mechanical digital lock has no electronics to fail, nothing for rain or salt air to short, and no flat-battery lockouts - at the cost of one shared code and no audit trail. For gates it is rarely a close call; why mech-digi dominates on gates and the realities of electronic locks make the case honestly. Borg's battery-free brand story is in Buyer's Guide Chapter 10.
Suitability and Alternatives
How does this compare with a Lockwood or Carbine alternative?
There is no direct Lockwood or Carbine rim slam latch ECP equivalent in our range - the BL4409 fills a specific niche. For heavy commercial gate or door applications where a mortice format is possible, the Lockwood 3572DX and the Carbine CDL7200 are higher duty alternatives but require a door format that suits a mortice case. The three-brand picture is in Lockwood vs Borg vs Carbine, at chapter level in Buyer's Guide Chapter 16, and the cycle-rating/exit-path framing for genuinely hard-worked doors is in what heavy duty actually means.
There is no direct Lockwood or Carbine rim slam latch ECP equivalent in our range - the BL4409 fills a specific niche. For heavy commercial gate or door applications where a mortice format is possible, the Lockwood 3572DX and the Carbine CDL7200 are higher duty alternatives but require a door format that suits a mortice case. The three-brand picture is in Lockwood vs Borg vs Carbine, at chapter level in Buyer's Guide Chapter 16, and the cycle-rating/exit-path framing for genuinely hard-worked doors is in what heavy duty actually means.
What does the warranty cover, and who handles a claim?
12 months from date of sale against mechanical defects in materials and workmanship under normal use, plus the 12-month corrosion resistance warranty under the maintenance conditions above. Misuse, vandalism, improper installation, and dismantling beyond the documented procedures are excluded. Purchased through Terry's Locksmiths or one of its trading brands? Contact Terry's first - we manage the claim with the Australian distributor on your behalf, alongside your Australian Consumer Law rights. Full terms in the warranty section of the main tab.
12 months from date of sale against mechanical defects in materials and workmanship under normal use, plus the 12-month corrosion resistance warranty under the maintenance conditions above. Misuse, vandalism, improper installation, and dismantling beyond the documented procedures are excluded. Purchased through Terry's Locksmiths or one of its trading brands? Contact Terry's first - we manage the claim with the Australian distributor on your behalf, alongside your Australian Consumer Law rights. Full terms in the warranty section of the main tab.
Related products: BL4401MGPROECP (tubular latch, free inside lever) - BL4441MGPROECP (back-to-back) - BL4401MGPRO (non-ECP)
Spares: BL4401KMGPROECP keypad - BL2000ECPCK change key - BLS09MK2 slam latch - BLS09RIMSTRIKE strike kit
Guides: Gate Post Too Narrow? - MG Pro and ECP Explained - Changing Codes - Latch vs Bolt - Double-Sided Gates - Buyer's Guide Ch 16: Gates
Spares: BL4401KMGPROECP keypad - BL2000ECPCK change key - BLS09MK2 slam latch - BLS09RIMSTRIKE strike kit
Guides: Gate Post Too Narrow? - MG Pro and ECP Explained - Changing Codes - Latch vs Bolt - Double-Sided Gates - Buyer's Guide Ch 16: Gates
What's In The Box - Borg BL4409MGPROECP
- Borg BL4409 MG Pro ECP digital keypad unit (external lever, MG Pro black coating)
- Rim-fixed slam latch body with turn knob and holdback/deadlock snib (MG Pro black coating)
- Rim-fixed strike plate (standard - face-mounted to gate post frame)
- Concealed fix rim strike plate (alternative - for inward-opening gates)
- Spindle bar (cut to length on site; suits up to 85mm gate/door thickness)
- Slam latch mounting screws (x4)
- Easicode Pro code change key (BL2000ECPCK)
- Optional code change disabling plug
- Holdback/deadlock deactivation dome head screws and washers
- Wood screws for rim-fixed strike plate (x2)
- Wood screws for concealed fix strike plate (x3)
- Fixings and installation hardware
Only one strike plate is fitted per installation - either the rim-fixed or the concealed fix. The other is redundant and can be stored as a spare. Confirm which is appropriate for your gate configuration before drilling.
Borg BL4409 MG Pro ECP - Real Installations
Supplied by Terry's, customer install - Perth WA
Rear slam latch - Supplied by Terry's, customer install - Perth WA
Borg BL4409 MG Pro ECP - Dimensions
Front keypad - 142mm H x 41mm W x 21mm D - 75mm base - 46mm lever extension
Rear slam latch body - 59.5mm W x 66mm H - 155mm x 18mm extension arm - 40mm backset (rim mount)
Borg BL4400 Series - Product Brochure
BL4400 Series - product overview, features, variants (incl. BL4409 rim slam latch), specifications and MG Pro finish
Borg Locks Warranty
Borg products sold in Australia are covered against mechanical defects in materials and workmanship under normal use and service. Warranty claims are handled by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries.
Warranty Summary
What the Warranty Covers
- Mechanical defects in materials and workmanship
- Defects arising under normal use and service conditions
- Repair or replacement of defective units at the discretion of the Australian distributor (LSC)
What the Warranty Does Not Cover
- Damage arising from misuse, vandalism, or abuse
- Damage resulting from improper installation
- Locks that have been dismantled - dismantling invalidates the warranty
- Normal wear and tear
- Cosmetic damage not affecting function
How to Make a Claim
For full returns and warranty claim procedures, visit our Returns & Warranty page - this is kept up to date and is the authoritative reference for current claim steps.
- Contact Terry's Tradies Pty Ltd first if you purchased through us or one of its associated trading names - we will assess the issue and manage the warranty process with LSC on your behalf. You do not need to contact LSC or Borg Locks UK directly.
- Have your proof of purchase ready (receipt or order confirmation).
- Warranty claims for Borg products in Australia are processed through LSC, the authorised Australian importer and distributor. Where an item is returned to LSC, freight charges must be prepaid and the item returned within the warranty period.
- If LSC finds the returned item to be defective, it will be repaired or replaced, and a detailed assessment report is provided to the customer after examination.
Australian Consumer Law
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. The Borg manufacturer warranty above operates alongside - and does not limit - these statutory rights.
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. The Borg manufacturer warranty above operates alongside - and does not limit - these statutory rights.
Confused? Overwhelmed? We get it.
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