Marks USA manufactures a versatile series of Grade 1 Deadlatches and Deadbolts which install easily and accept most other manufactures conventional, high security and IC Core cylinders.
Features
Tapered cylinder collars prevent (break in attempts by) wrenching
Steel shutter system eliminates access to mounting screws when door is locked.
ANSI 156.5
3 Hour Fire Rating
Series 1 Cylindrical Cartridge
Unitized assemblies for 2-1/8" bore
Strike: #1136, 2-3/4" strike
IC Core Tailpieces ARE Included
Interchangeable Core models for 6 or 7 pin cores (not included)
Accepts: Marks, Medeco , KeyMark, Falcon & Best
Specifications
Latch
Grade 1, 9/16" throw, 2-3/4" backset
Door thickness
1-3/4"; For 1-3/8" doors use spacer rings K1442/32D