Lockwood 4782ENOHDSS - Mortice Lock 25.4 mm Backset to Suit SmartAir Escutcheons Satin Stainless
The Lockwood 4782ENOHDSS is a 25.4 mm short backset mortice lock body from the Selector 3780 Series, designed to suit SMARTair i-max electronic escutcheons. It brings auxiliary deadlatching security to aluminium and narrow stile commercial doors, with a Satin Stainless Steel faceplate and strike.
Fitted with a SMARTair escutcheon, this mortice turns a narrow-frame commercial door into an electronic access-controlled opening while keeping a proven Selector 3780 Series mechanical lock case at its core. The body is mechanical only - the credentials, electronics and management system all live in the escutcheon.
Usually ships in 11 business days.
This is a special order product and cannot be returned once purchased. Please confirm the backset and your door details before ordering.
Key Features
- 25.4 mm short backset mortice lock body for narrow stile and aluminium doors.
- Designed to suit SMARTair electronic escutcheons for electronic access control.
- Satin Stainless Steel faceplate and strike for durability in commercial service.
- Auxiliary deadlatching resists latch manipulation when the door is closed.
- Reversible handing without disassembling the lock case.
Successfully tested up to 4 hours on compliant fire door assemblies to AS 1905.1. Suitability always depends on the certification of the complete door assembly - see our Australian standards guide and the fire door lock range.
What's In The Box
- 1 x Lockwood 4782ENOHDSS mortice lock body (25.4 mm backset)
- 1 x Satin Stainless Steel faceplate
- 1 x Satin Stainless Steel strike plate
- Fixing screws
- Installation instructions
Suitable Uses
- Aluminium and narrow stile commercial doors.
- Electronic access control installations using SMARTair escutcheons.
- Fire-rated doors requiring a compact backset mortice lock.
- High-traffic commercial, retail, healthcare and institutional facilities.
- Part of our mortice locks for smart locks range.
Available Finish Options
Satin Stainless Steel
(This Product)
STK 4782ENOHDSS
Finish selection does not affect functionality, compliance, or performance.
Item Code Family - Escutcheon-Suit Mortice Bodies
Selector 3780 Series - Accessories and Spare Parts
Full Specifications
Frequently Asked Questions
Measure from the door edge to the centre of the spindle - our door measuring guide shows how. This model is 25.4 mm; the family also covers 23 mm (3782ENOHDSS), 30 mm (5782ENOHDSS), 38 mm (6782ENOHDSS).
It pairs with SMARTair i-max escutcheons such as the i-max Update-on-Card escutcheon and the i-max Wireless + Openow escutcheon. Choose the escutcheon by management system (Standalone, Update-on-Card, Wireless Online or Openow), then match the backset to your door stile.
Yes - the lock is tested up to 4 hours on compliant fire door assemblies to AS 1905.1. The rating always depends on the complete certified door assembly, so check the doorset tag first; our standards chapter explains AS 1905.1 fire door requirements.
It is designed for aluminium and narrow stile doors. A timber fixing kit (3782-TFKITSS / CP / PB) adapts 3780 series locks to timber doors - but the kit is not suitable for this 25.4 mm backset model, so ask us before ordering for a timber door.
Additional Information
Related Products and Guides
SMARTair escutcheons this mortice suits. Pair it with the i-max Update-on-Card escutcheon and the i-max Wireless + Openow escutcheon - to create an electronic access-controlled door.
Other backsets in this series. Choose the backset to suit your door stile: 25.4 mm (this lock), 23 mm (3782ENOHDSS), 30 mm (5782ENOHDSS), 38 mm (6782ENOHDSS).
Planning the door. See our door type compatibility guide, Australian standards chapter and installation and troubleshooting guide; for electronic hardware options see the access methods chapter, and for a supported fit-out our site survey and installation service and the smart lock buyers guide.
Warranty
Lockwood products bought new in Australia through authorised channels are covered against defects in materials and workmanship: 25 years on mechanical components, 3 years on electrical and electronic parts (PADDE and electric mortice locks 5 years; batteries excluded), 12 months on keys, and finish cover that varies by finish type (up to 25 years on Everbrass). Proof of purchase required for all claims.
Download PDF Resources
Full Selector 3700/3780 series catalogue (2024 edition) - opens at the 3782 short backset escape lock section, with dimensions, functions and accessories for this family.
Factory service manual - opens at the exploded parts diagrams covering the 4782 series, with orderable spare part numbers.
The Lockwood warranty statement - 25 years mechanical cover, terms and exclusions.
What's in the Box - Lockwood 4782ENOHDSS
- 1 x Lockwood 4782ENOHDSS mortice lock body (25.4 mm backset)
- 1 x Satin Stainless Steel faceplate
- 1 x Satin Stainless Steel strike plate
- Fixing screws
- Installation instructions
PDF Files - Lockwood 4782ENOHDSS
Full Selector 3700/3780 series catalogue (2024 edition) - opens at the 3782 short backset escape lock section, with dimensions, functions and accessories for this family.
Factory service manual - opens at the exploded parts diagrams covering the 4782 series, with orderable spare part numbers.
The Lockwood warranty statement - 25 years mechanical cover, terms and exclusions.
ASSA ABLOY Warranty Overview
ASSA ABLOY branded products sold in Australia are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty coverage varies depending on mechanical components, electronic components, cylinders and finish categories.
This overview summarises the structure of ASSA ABLOY warranty coverage. Full terms, exclusions and claim procedures are set out in the official ASSA ABLOY Warranty document.
Warranty Periods Summary
Finish & Material Notes
- Stainless steel does not mean stain-free. Tea staining is not covered where cleaning and maintenance guidelines have not been followed.
- Cosmetic, decorative and appearance damage is not covered.
- Battery failure or battery leakage damage is not covered.
What the Warranty Covers
- Defects in material and workmanship within the applicable period.
- Assessment by ASSA ABLOY to determine repair, replacement with the same or closest equivalent product, or refund of purchase price.
- Remedy determined at ASSA ABLOY’s discretion.
Common Exclusions
- Normal wear and tear.
- Misuse, abuse or installation outside published technical specifications.
- Improper maintenance or neglect.
- Unauthorised modification or repair.
- Use of non-genuine ASSA ABLOY parts or substitute components.
- Exposure to corrosive environments including coastal air, salt spray, chemicals, contamination or high humidity.
- Removal, refitment, freight or labour charges.
- Second-hand or imported products not sold through authorised Australian channels.
Warranty Claim Process
- Retain proof of original purchase.
- Return the product to the original authorised retailer where applicable.
- If claiming directly, obtain a case number before returning goods.
- Securely package returned goods and clearly reference the case number.
- Warranty assessment determines repair, replacement or refund.
Australian Consumer Law
ASSA ABLOY warranties operate in addition to rights available under the Australian Consumer Law. Goods come with guarantees that cannot be excluded. Customers may be entitled to a replacement or refund for a major failure and compensation for reasonably foreseeable loss or damage.
Where a product fails to meet acceptable quality standards and the failure does not amount to a major failure, the customer is entitled to repair or replacement.
Official Warranty Documents
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