Briton 5220-57 Euro / Oval Sashcase

The Briton 5220-57 is a high-performance, contract-quality dual-profile mortice sashlock designed for both commercial and residential applications. Highly versatile, its dual-profile design is compatible with both Euro profile and Oval profile cylinders, making it an excellent choice for new installations or retrofitting existing doors.

Constructed with a durable black powder-coated steel case and a grade 304 stainless steel forend, this sashlock features a single-throw 13mm hardened steel deadbolt to resist sawing attacks. It is designed with a 57mm backset and 57mm centres in line with BS 8300 guidance, making it ideal for use with lever furniture.

A key highlight of the Briton 5220 is its unique 'X-Tension' feature, which allows you to adjust the follower spring tension to perfectly match the weight of your lever handles, effectively eliminating lever droop. The latch is easily and quickly reversible on-site without dismantling the lockcase, ensuring hassle-free installation for both left and right-handed doors. It is also pierced to accept bolt-through furniture and comes complete with a matching strike plate and a 10-year manufacturer's guarantee.

Technical Specifications

• Brand: Briton
• Model: 5220-57
• Backset: 57mm
• Centres: 57mm (Euro profile) / 56mm (Oval profile)
• Case Depth: 76mm
• Case Height: 108mm
• Forend Dimensions: 165mm (L) x 25mm (W)
• Spindle Size: 8mm
• Deadbolt Throw: 13mm (Single throw)
• Finish: Satin Stainless Steel
• Handing: Reversible (Non-handed)
• Standards & Certifications: CE Marked & UKCA Marked to EN 12209; Fire tested to EN 1634-1 (up to 90 mins timber / 4 hours steel)

Key Features

• Dual Profile Compatibility: Works seamlessly with both Euro and Oval profile cylinders, reducing the need for multiple lock variants.
• Adjustable 'X-Tension' Spring: Allows follower spring tension adjustment to suit different lever handle weights and prevent lever droop.
• Hardened Steel Deadbolt: 13mm single-throw deadbolt provides robust resistance against sawing attacks.
• Quick Reversible Latch: Easily change handing on-site without needing to dismantle the lockcase.
• Bolt-Through Fixing: Case is pierced to accept bolt-through door furniture.
• 10-Year Guarantee: Supplied with a 10-year manufacturer's guarantee for peace of mind.