Chubb 3R35 5 Detainer High Security Nightlatch
Product Description
5 detainer with slam action locking and auto deadlocking latchbolt, excellent security for entrances and escape doors. Only uses handle on inside allowing access from outside by key only, bolt can be held back by snib on inside. Deadlocked from either side by key to secure against handle being operated when a glass panel may be broken in the door.