Mul-T-Lock’s Single Cylinder Hercular Deadbolt is a high-security deadbolt system for residential and commercial use. The Single Cylinder Deadbolt has one keyed side and a thumb turn on the reverse. Composed of solid brass and steel, this deadbolt has an adjustable backset for door recesses of 2 3/8” to 2 3/4”. It is also self-adjusting for doors between 1 1/2” and 2 1/2” thick. They are UL listed for use on fire doors, have ANSI Grade 1 Certification, and patent-protected key control for extra security. The security features protect against the drill, wrench, ice pick, hammer, bumping, and prying attacks.
- UL437 – pick and drill resistance
- UL – fire rated bolt
- ANSI GRADE 1
- Adjustable Backset for either 2 3/8″ or 2 3/4″
- Keyway MT5 Plus
