Borg BL50013572KBTB Back-to-Back Adaptor Kit - Lockwood 3572 - Suits 5000 Series Keypads
This Borg BL50013572KBTB back-to-back (BTB) adaptor kit converts a Lockwood 3572 mortice lock that is already in the door so it can be worked by Borg 5000 Series mechanical digital keypads - one keypad on each side of the door. It is a stainless steel conversion part for an existing Lockwood lock, from our Scar & Adaptor Plates range.
A back-to-back door takes two Borg 5000 Series keypad-only units, such as the BL5000KSC / BL5000KSS lever keypad. The 5000 Series keypads this kit takes are listed under What This Kit Converts and the Keypads It Takes, and they sit in our Keypads for Smartlocks category. New to battery-free keypad locks? What Is a Mechanical Digital Lock? in Chapter 16 of our Buyer's Guide explains how they work.
Usually ships same day if ordered before 11am AEST (excludes weekends and Queensland public holidays).
Key Features
- Back-to-back (BTB) conversion for the Lockwood 3572 mortice lock: a Borg keypad on each side of the door (see What Is a Double-Sided Digital Mechanical Lock?).
- Takes Borg 5000 Series keypads, including the BL5000KSC / BL5000KSS, BL5000KMG and BL5401KSSDDA keypads and the Easicode Pro (ECP) BL5401KSSDDAECP.
- Stainless steel kit that keeps the Lockwood 3572 already in the door - the retrofit approach set out in The Retrofit Ecosystem.
- Battery-free: Borg keypads are fully mechanical, with no batteries to replace - see How a Mechanical Digital Lock Works.
- Code changing is set by the keypads you choose: ECP keypads change on the door (Borg Easicode Pro: The On-Door Change), non-ECP keypads change On The Bench (Borg Standard Chambers).
- Sister kits: BL50013572K is the single-keypad 5000 Series kit for the same lock, and BL3572KITBTB is the Lockwood 3572 back-to-back kit for Borg 2000 and 4000 Series keypads.
- Spare spindles: the standard BLMORTSPDL, and the extended BLMORTSPDL120 for thicker doors.
Suitable Uses
- Doors already fitted with a Lockwood 3572 mortice lock that is staying in place - identify the hardware with Existing Door Hardware in our Measuring Your Door chapter.
- Doors where a code is wanted on both sides, as long as the door is not part of a required exit path - see Doors in Required Exit Paths.
- Commercial doors already fitted with Lockwood mortice hardware, where keypad entry is wanted without replacing the lock - see Commercial & Heavy Duty and Better Suited to Commercial Door Hardware.
- Battery-free code entry in place of an electronic smart lock - compare the two in Mechanical Digital Lock vs Smart Lock.
Available Finish Options
Stainless Steel
(This Product)
STK BL50013572KBTB
Finish selection does not affect functionality, compliance, or performance.
Borg Adaptor Kits and Scar Plates - Item Code Family
This product is the bold row. Browse scar and adaptor plates in the Scar & Adaptor Plates category.
What This Kit Converts and the Keypads It Takes
This kit converts the Lockwood 3572 mortice lock and takes Borg 5000 Series keypads, one on each side of the door. The table lists the lock, the 5000 Series keypad-only units it takes (also in Keypads for Smartlocks) and the complete Borg 5000 Series locks from the same keypad family. If you choose the Easicode Pro (ECP) keypad, ask us to confirm it with this kit before you order.
Other ways to do the same job:
Accessories and Spares
Choose the spindle once the door is measured - see Door Thickness - and check the ordering note on the BLMORTSPDL120 page before ordering the extended spindle.
Full Specifications
Frequently Asked Questions
Two. Back-to-back means a Borg 5000 Series keypad on each side of the door, so the kit pairs with two keypad-only units - for example two BL5000KSC / BL5000KSS lever keypads. The keypads we stock for it are listed under What This Kit Converts and the Keypads It Takes, and What Is a Double-Sided Digital Mechanical Lock? explains the set-up. The keypads from a factory back-to-back Borg lock such as the BL5051 come from the same 5000 Series keypad family, but ask us before relying on that pairing - we will check your lock and keypads before you order.
Yes. With a keypad on both faces of the door, a code is needed to leave as well as to enter, so a back-to-back set-up is not for a door that forms a required exit path - see Not for Required Exit Paths and Doors in Required Exit Paths. Where people must be able to leave freely, Lockwood's 3572DX pairs an outside keypad with free exit from inside.
Choose by where you want the code. This kit puts a Borg 5000 Series keypad on both sides of the Lockwood 3572; BL50013572K is the 5000 Series kit for the same lock with a single keypad. Compare every kit in the item code family table, or ask us for a recommendation.
A 3582 kit - this one is for the Lockwood 3572. For a Lockwood 3582 with a Borg 5000 Series keypad the kit is BL50013582K, for outward-opening doors only; the back-to-back kit for a 3582 is BL3582KITBTB, for Borg 2000 and 4000 Series keypads. Not sure which lock you have? Existing Door Hardware in our Measuring Your Door chapter shows what to check.
Thicker doors take the extended spindle. The standard spare spindle is BLMORTSPDL, and BLMORTSPDL120 is the extended version for thicker doors. Measure the door as shown in Door Thickness and ask us to confirm what your door needs before you order.
Additional Information
- Retrofit, not replacement: keeping the Lockwood 3572 in the door and adding Borg keypads is the approach set out in The Retrofit Ecosystem, and parts support matters as much as the first fit - see Spare Parts and Support Matter.
- Plan code changes before choosing keypads: Easicode Pro keypads change code on the door (What Does ECP Mean?); non-ECP keypads change On The Bench (The Bench Method). If codes will change regularly, even once a year, choose ECP keypads - Do You Always Need ECP? sets out the trade-off.
- Identify and measure first: the 3572 and 3582 take different kits and thicker doors take the extended spindle, so check the lock type (Bored Cylindrical vs Mortice Door Prep, Mortice Lever & Escutcheon) and the door thickness (Door Thickness) before ordering.
- Professional fitting: a back-to-back conversion means work on a mortice lock from both faces of the door. When DIY Is Appropriate in Chapter 12 sets out when to call a professional, and our advice and installation service can help.
- The complete-lock route: Lockwood's own 3572DX is a complete keypad mortice lock with a single outside keypad and free exit from inside - the Lockwood DX route for mortice doors covered in Better Suited to Commercial Door Hardware.
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. The lock must not be dismantled - doing so will invalidate the warranty. Proof of purchase required for all claims.
Download PDF Resources
Borg's one-page BL5000 Series accessories sheet (LSC) - covers the single-keypad BL50013572K, the 3582 kit and the SPBL5001 scar plates. The back-to-back kit itself is in the BDS catalogue.
The BDS security products catalogue (LSC) - page 44 covers the Borg 2000 & 5000 Series adapter plates, including BL50013572KBTB in stainless steel with its plate dimensions. The mortice lock spindle for Borg 2000 and 5000 Series conversions is on page 45.
Borg's BL5000 Series brochure - includes dimensioned drawings of the 5000, 5400 and 5100 Series keypads.
PDF Files - BL50013572KBTB
Borg's one-page BL5000 Series accessories sheet (LSC) - covers the single-keypad BL50013572K, the 3582 kit and the SPBL5001 scar plates. The back-to-back kit itself is in the BDS catalogue.
The BDS security products catalogue (LSC) - page 44 covers the Borg 2000 & 5000 Series adapter plates, including BL50013572KBTB in stainless steel with its plate dimensions. The mortice lock spindle for Borg 2000 and 5000 Series conversions is on page 45.
Borg's BL5000 Series brochure - includes dimensioned drawings of the 5000, 5400 and 5100 Series keypads.
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
- 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.
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.
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