220 - 220 double nightlatch with snib lock-back

Application

Locks for classroom doors, offices, industrial premises, apartments, etc.

Available with single cylinder and thumbturn, or alternatively with double cylinders or single cylinder only.

Supplied as standard with striking plate.

Cylinder and accessories bolt through lockcase for added strength.

Key can only be removed in locked (or locked-back) position.

For finishes and dimensions see Lockcases Information appendix.

When ordering please specify hand and door thickness.

Specification

Upper bolt deadlocks automatically when door is closed. Snib for locking the upper bolt into lockcase. Lower bolt operated by lever handle. Bolts reversible without opening lockcase.

Available with 35mm, 50mm or 70mm backset.

Optional microswitches: MF monitors bolt deadlatching and use of cylinder/thumbturn MD monitors lock-back.

Exterior [PROD3] Interior

Upper latchbolt automatically deadlocked.

Key retracts both latchbolts. Lever handle retracts lower latchbolt.

Turn retracts both latchbolts. Lever handle retracts lower latchbolt.

Upper latchbolt held back by snib in faceplate.

 

Finish

Product has been successfully type-tested for conformity to BS EN 12209.
Regular audit testing is undertaken.

Standards