This is a stainless steel door reinforcer in a satin finish. This combo lock reinforcer helps prevent a forced entry. Typically used on wood or metal doors that are 1-3/4 in. thick with mortise or drive-in latches. Accommodates key-in knob locksets and deadbolt combination locksets. It features two 2-1/8 in. bores with a 2-3/4 in. backset. Hole spacing is 5-1/2 in. on center. Dimensions are 4-5/16 in. wide and 10-7/8 in. tall. Designed for double bore doors with a 2-3/4 in. backset Helps protect against a forced entry For use on doors 1-3/4 in. thick that have mortise or drive-in latches Stainless steel construction with satin finish Pre-punched for easy mounting Mounting hardware included Easy to install with a few simple tools A Phillips head screwdriver required for installation