Passage Function Mortise Locks

These locks are the easiest and least complicated because these locks don’t lock. Their only function is to keep the door closed when it is shut. This is actually very important when you consider that fire travels much more slowly when doors in a building are shut because it lowers the amount of oxygen available to a fire. These locks are the least expensive due to their simplicity.

These locks are ideal for low security areas like interior hallways and closets.