Briton 5220.57.S.SS | Sash Lock 57mm Backset - Square Forend (5220)
Finishes: SS Stainless Steel
The Briton 5220.57.S.SS sash lock with 57mm backset and square forend is a reliable, high-performance mortice sash lock from the trusted Briton 5200 series, manufactured by Allegion. Designed for commercial and contract applications, this dual-profile cylinder sash lock offers exceptional versatility and security for internal and external wooden doors that require both latching and deadlocking functions. Its popularity stems from its dual-profile compatibility, allowing use with either Euro or oval profile cylinders, eliminating the need for multiple lock variants during installation or upgrades.
- Additional Product Details
Sash Lock 57mm Backset - Square Forend.
- Single throw hardened steel 13mm deadbolt to protect from sawing
- Deadbolt can be operated from one side or both as required depending on the cylinder selected
- Unique X-Tension feature allows the spring tension to be adjusted to suit the weight of lever furniture and to eliminate lever 'droop'
- Quick reversible latch without the need to dismantle the lock case
- Dual profile can be used with Euro or oval profile cylinders
- 57mm backset and 57mm centre in line with guidance of BS 8300
- 10-year guarantee
IMPORTANT - For fire door installations, the lock must include intumescent protection to maintain the door's integrity.The Briton 5200 Series is a contract-quality mortice lock case range compatible with Euro or oval-profile cylinders. The Series offers the most common range of lock functions. Performance Level 3.
Briton Fire Door Closers | Briton Exit Devices | Briton Locks
Relcross Limited (trading as) Door Hardware Online | Hambleton Avenue | DEVIZES | Wiltshire | SN10 2RT | United Kingdom | T: ++ 44 (0) 1380 720 062 | F: ++ 44 (0) 1380 729 888 | E: britonsales@doorhardware-online.co.uk
- Certification
EN 12209: 2003/AC:2005
UKCA | CE | 90 Mins Timber | 240 Mins Steel | Warranty: 10 Years (Mechanical)
Certificates, including DoPs downloadable here
- Resources | Downloads


