US Lock Commercial/Residential Mortise Cylinder Double CylinderDeadlock. Excellent quality & dependability manufactured from thefinest quality materials. Contemporary design. Wrench-proof andpull-proof. No exposed screws.
Fits 1-3/8" to 1-3/4" thick doors.
Requires a 1-1/2" bore
2" backset with a full 1" throw bolt.
Includes two 1" mortise cylinders. - Select a keying
Keying = The type of key that fits into the lock. If you aren't trying to match an existing system, pick any keying type.
Available Finishes: Brass, Antique Brass & Dull Chrome