Design House 702282 C-Series Single Cylinder 2-Way Latch Deadbolt, Adjustable Backset, Brushed Bronze Finish Finished in Brushed Bronze and designed for left or right hand doors ANSI grade-2 certified for commercial security; UL listed for use on fire doors (3 hours) Fits 2-3/4-inch and 2-3/8-Inch backsets; fits 1-3/8-Inch and 1-3/4-inch thick doors Single cylinder deadbolt; keyed lock exterior, turn-button lock interior Comes with a limited lifetime mechanical warranty and a 5-year finish warranty