Adams Rite Left-Hand Hook Throw Deadbolt Latch Commercial Lock

• Cylinder Backset 1-1/8" (29 mm)
• 13/16" (21 mm) Throw
• 5-Ply laminated stainless steel throw bolt with alumina-ceramic core

High-security commercial mortise hookbolt (SKU: DH18900L) engineered for banks, retail stores, and other commercial doors. The 5-ply laminated stainless steel throw bolt features a center alumina-ceramic core to resist hacksaw attacks—including high‑tension "super hacksaws"—while the hook-shaped bolt repels pry-bar attempts for superior anti-pry protection.

The lock accepts standard 1-5/32" (29 mm) diameter mortise key or thumbturn cylinders with AR MS-Type Cam, providing flexible installation and compatibility with common commercial cylinder standards.

Three operating modes for controlled access:

1. Both lock and latch bolts retracted for unrestricted entry and exit during business hours.

2. Handle-operated latch for exit-only traffic just after closing.

3. Maximum-security hookbolt engaged for overnight lockup.