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.
Deadbolt: ANSI 156.5 GRADE 1 (UL Fire Ratings not applicable)
Deadlatch: ANSI 156.2 GRADE 1, UL Fire Rated 3 hours
Accepts Medeco, Kaba, Multilock, ASSA and other high security cylinders
IC core models for "Best" size cores
Accepts most manufactures conventional cylinders
Tapered cylinder collars prevent (break in attempts by) wrenching
Steel shutter system eliminates access to mounting screws when door is locked.
