Lockwood 3772SS — MkII Universal Primary Lock 60 mm Backset Satin Stainless
The Lockwood 3772SS is a Selector® 3770 Series MkII universal primary lock with a 60 mm backset and Satin Stainless Steel (SS) finish. This heavy-duty mortice lock provides reliable deadlatching and multi-function flexibility for commercial and institutional applications. With in-door configuration, anti-lockout and holdback features, and tested durability, the 3772SS is ideal for schools, offices, hospitals, hotels, and industrial facilities.
Key Features
- 60 mm backset universal mortice lock body (MkII platform).
- Stainless steel latch bolt with auxiliary deadlatching for secure operation.
- Easy red/green function selector under the faceplate for in-door configuration.
- Standard lock includes anti-lockout and holdback capabilities.
- Reduced cam and adaptor range simplifies specification and maintenance.
- Case: Zinc alloy with stainless steel chassis for strength and longevity.
- Faceplate: Satin Stainless Steel, square end design.
- Compatible with Lockwood 570 oval cylinders, restricted and master key systems.
- Retrofits directly to Synergy® case sizes for easy upgrades.
Fire Rated
- Tested up to 4 hours on fire door assemblies (AS 1905.1:2005).
Specifications
- Item Code: 3772SS
- Function: Universal primary mortice lock body (MkII platform).
- Backset: 60 mm.
- Door Thickness: 32–50 mm standard; extension kits available up to 200 mm.
- Bolt: 15 mm stainless steel latch with auxiliary deadlatching bolt.
- Case: Zinc alloy body with stainless steel chassis.
- Faceplate: Satin Stainless Steel, square end.
- Handing: Reversible without disassembly.
- Standards: AS4145.2 (Durability D8, Security S7), AS1905.1 (Fire Doors).
What's In The Box
- 1 × Lockwood 3772SS mortice lock body (60 mm backset)
- 1 × Satin Stainless Steel faceplate
- 1 × Satin Stainless Steel strike plate
- Fixing screws
- Installation instructions
Suitable Uses
- Industrial and commercial buildings with high-traffic use.
- Institutions, clubs, schools, hospitals, hotels, and public facilities.
- Fire-rated doors requiring tested and certified mortice lock hardware.
- Retrofit upgrades from Lockwood Synergy® to Selector® MkII platforms.
Selector® 3772 MkII Escape Locks — Item Code Family
Selector® 3772 MkII Escape Locks — Accessories & Spares
Warranty
- Lockwood 25 Year Mechanical Warranty covers mechanical components and workmanship under normal use and correct installation.
- Electronic and electrical components are covered for 3 years (PADDE & electric mortice locks 5 years, batteries excluded).
- Keys are covered for 12 months.
- Finish warranty varies by finish type and exposure — e.g. Everbrass 25 years; Stainless/Chrome/Anodised 10 years; PVD/VIVID 10 years; Symmetry range 5 years; decorative finishes such as bronze, antique and powdercoat 2 years (natural brass ageing excluded).
- Warranty excludes misuse, improper installation, modification, or failure to maintain as specified.
Download PDF Resources
| Lockwood Selector 3700 Series Mortice Locks Catalogue | |
| Lockwood 25 Year Mechanical Warranty (Conditions Apply) |