Briton 5250.57.S.SS | Night Latch 57mm Backset - Square Forend (5250)

Briton 5250.57.S.SS | Night Latch 57mm Backset - Square Forend

Briton 5250.57.S.SS | Night Latch 57mm Backset - Square Forend (5250)

Finishes: SS Stainless Steel


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  • Additional Product Details

    Night Latch 57mm Backset - Square Forend. 

    • Night latch function operated by a half set of levers, with the lever on the inside used to withdraw the latch bolt and open the door
    • A single cylinder on the outside operates the latch bolt with a single key turn
    • Anti-thrust feature prevents manipulation of the latch bolt when the door is closed
    • 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
    • 57mm backset in line with guidance of BS 8300
    • Euro profile cylinder centres 47.6mm and oval cylinder centres 48mm
    • 10-year guarantee


    IMPORTANT - For fire door installations the lock must include intumescent protection to ensure the integrity of the door is maintained.

    The Briton 5200 Series is a contract quality, mortice lock case range which can be used with euro profile 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

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    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