Lockwood 3770 MkII Mortice Nightlatch — Trade Pack with Latching Adaptor, 60 mm Backset, Satin Stainless (SSS)
The Lockwood 3770TSS MkII mortice nightlatch is supplied as a trade pack including the latching adaptor, with a standard 60 mm backset and Satin Stainless (SSS) finish. Designed for heavy-duty commercial and institutional use, it auto-latches on closing and operates by key outside and key/turnsnib inside.
Estimated Warehouse Dispatch: 11 Days
Non-Returnable Item: This product cannot be returned once purchased
Key Features
- Trade pack supplied with latching adaptor.
- Nightlatch function: auto-latches when door is closed; key outside, turnsnib/key inside.
- 60 mm backset standard; suits 32–50 mm door thickness.
- Heavy-duty case construction for commercial environments.
- Through-fixing provision for robust rose/escutcheon installation.
- Compatible with Lockwood 570 cylinders and restricted keying systems.
- Reversible handing.
Fire Rated
- Successfully tested up to 4 hours on fire door assemblies (AS1905.1).
Specifications
- Item Code: 3770TSS
- Function: Mortice Nightlatch (Primary) — Trade Pack with Latching Adaptor
- Backset: 60 mm
- Door Thickness: 32–50 mm
- Handing: Reversible
- Case Material: Zinc
- Bolt/Latch: 15 mm projection; stainless steel latchbolt
- Cylinder: 570 profile; 2-cylinder configuration
- Standards (AS4145.2): Security S7, Durability D8, Corrosion C6
Warranty
- Mechanical Warranty: 25-year mechanical warranty (conditions apply).
Download PDF Resources
|
Lockwood 3700 Series Mortice Locks — Service Manual |
|
Lockwood Selector 3700 Series Mortice Locks — Catalogue |
|
Lockwood 25-Year Mechanical Warranty (Conditions Apply) |
3770 MkII Nightlatch — Item Code Family
Additional Information
- Designed for high-traffic doors in commercial, institutional and industrial buildings.
- Pairs with a wide range of Lockwood mortice lock furniture and 570 cylinders (sold separately).
