Emtek Key In Latches - LC4-DLB Backset and Face plate Style:2 3/4'' Backset an auxiliary key lock that

an auxiliary key lock that has two keys and an escutcheon plate with additional spring-loaded relocking device to protect against punch attacks and a tempered glass relocking device to protect against torch attacks with remotely and randomly placed cross locking bolt and thermal cords

Installation instructions included in packaging

5 inches thick

such as Mul-T-Lock’s IntelleQt

Model: 850-8778523

Emtek Key In Latches - LC4-DLB Backset and Face plate Style:2 3/4'' Backset an auxiliary key lock thatEmtek Key In Latches LC4 DLB Latches are included with Emtek locks. Latches come standard with square corner faceplates. Radius corner faceplates may be substituted at no extra charge. If faceplate and screws are required, please specify square or 14 in. radius corner for the faceplate, and finish.