Mul-T-Lock's® story begins with the invention of our patented four-way lock.
In 1972, a customer walked into a locksmith shop asking for four extra locks for her front door.
After installing the locks that same day, the locksmith related the story to a friend, and the two devised the lock-and-drill concept that has served as the basis for Mul-T-Lock's four-way locking expertise over the last three decades.

The rest is history.

Today, Mul-T-Lock offers a range of multi-point locks, some that mortise into the core of wood or metal doors, as well as several external, surface-mounted multi-point locks:

4-Way Locks - provide heavy-duty, multi-bolt locking and latch functionality.
Lock 700 - features a three-way rim lock with latch functionality for doors.
Minibars Lock - features a versatile, heavy-duty rim lock suitable for horizontal and vertical installations, which can be installed on various types of doors, windows and shutters.