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 156.5 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.

Trim Types

Recent News
No recent news items.
Upcoming Events
no events at this time
Marks USA, Amityville, NY 11701
800-526-0233 | fax 631-225-6136