624 - 624 double nightlatch with cylinder key lock-back

Application

Locks for doors where unrestricted exit at all times is required. Suitable for classrooms, offices, industrial premises, doors to flats and apartments, hotel bedrooms and commercial premises.

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.

Split follower locks incorporate different and separate functions on either side of the door.

For finishes, handing and dimensions see Lockcases Information appendix.

When ordering please specify hand, direction of door opening and door thickness.

Specification

Upper bolt deadlocks automatically when door is closed. Internal cylinder locks the upper bolt into lockcase. Lower bolt operated by external lever handle. Internal lever handle retracts both bolts, giving single-action exit at all times.

Bolts are reversible without opening lockcase.

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

Split follower lock.

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

Optional microswitches: MC microswitch monitors bolt deadlatching, use of cylinder/thumbturn and use of handle/emergency accessory MD microswitch monitors lock-back.

Exterior [PROD3] Interior

Upper latchbolt automatically deadlocked. 

Key retracts both latchbolts. Lever handle retracts lower latchbolt.

Lever handle retracts both latchbolts. 

Key controls upper latchbolt lock-back.

 

Finish

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

Standards

Please note that when specifying split follower locks it is important to state the direction of door opening as well as the handing.

Ordering Options
35787616357
CONNECT 624/35 LH FOL RH IN (NO STRIKE)
LS35787616557
CONNECT 624/35 LH FOL LH OUT (WITH STK)
LS35787716557
CONNECT 624/50 LH FL LH IN (WITH STK)
LS35760016557
CONNECT 624/50 RH FOL (WITH STRIKE)
LS35787716357
CONNECT 624/50 RH FOLL (WITH STRIKE)
LS35787816557
CONNECT 624/70 LH FOLL (WITH STRIKE)
LS35760116357
CONNECT 624/70 RH FOLL (WITH STRIKE)
LS35759916357
CONNECT 624/35 RH FOL RH OUT (WITH STK)