Grade 2 Commercial One Sided Deadbolt; 1 in. Deadbolt for 2-1/8 in. Door Hole ; For use on doors 1-3/8 in. to 1-3/4 in. thick.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit. Single sided deadbolt, thumb turn inside, no exterior keyway 2-3/4 inch fixed backset latch Full 1 inch solid core throw bolt for strength ANSI Grade 2 performance, Weight: 0.95 pounds, Manufacturer: Master Lock