Series 21 Product description: BKS locks with deadbolting latches and automatic locking: ‚¬â€œ Automatic deadbolt: The automatic deadbolt automatically throws 20 mm and together with the deadbolting latch provides security due to perfect locking. ‚¬â€œ Deadbolting latch: Serving as additional locking, the dead- bolting latch guarantees optimum security. An integrated releasing device causes the latch to throw automatically from 12 to 20 mm. Features and advantages: Automatic locking of deadbolting latch and automatic deadbolt due to integrated releasing device, i.e. an auxiliary latch is not required. Manual locking of the door is no longer necessary. In combination with BKS door furniture licensed to EN 179 + EN 1125. Fire rated to DIN 18250 + DIN 4102 + DIN EN 1634. Certified to VdS (Association of German non-life insurers): security class B. Available with anti-panic functions ‚¬â€œ B - switch over function ‚¬â€œ C - coercive locking function ‚¬â€œ E - latch lever function For single or double leaf door systems. Through-fixing of standard door fittings such as escutcheons or short backplate sets possible. Fully enclosed lock case ‚¬â€œ dirt or other foreign bodies cannot obstruct the easy operation of the lock. Easy assembly due to easily accessible bore for cylinder fixing screw. Various forend types. Application: Fire rated doors as emergency exits or anti-panic doors. Technical descripotion: Profile cylinder lock with or without latch lever function depending on the variant, also for Swiss-type round cylinder as an option. Fully enclosed, galvanised lock case. Holes around follower and cylinder bores for through-fixing of door furniture with connecting screws up to M 8 (with rosettes up to M 6). With bushes protecting against steel swarf. Technical data: Follower: steel; 9 mm square Centres: 72 mm Backset: 55, 60,