Feel safer in your home with the Master Lock Single Cylinder Deadbolt, a lock that can keep unauthorized individuals out, even if they have a key! The NightWatch® feature makes the deadbolt impossible to open from outside for added security whenever you need it. With its adjustable latch, this lock can be employed in doors ranging from 2-3/8-inch to 2-3/4-inch thicknesses whether backset, rounded corner, square or drive-in installation is required.

A 10-year warranty on the mechanical components gives you peace of mind that you’re investing in a single cylinder deadbolt that can stand the test of time.