Prime-Line U 9558 Door Reinforcer 1-3/4 inch Thick by 2-3/4 inch Backset 2-1/8 Product Description This door guard is constructed from solid brass. It helps to protect your door from forced entry. It can be used on wood or metal doors with mortise or drive-in latches. It can also accommodate key-in knob locksets or deadbolts. From the Manufacturer This door guard is constructed from solid brass. It helps to protect your door from forced entry. It can be used on wood or metal doors with mortise or drive-in latches. It can also accommodate key-in knob locksets or deadbolts. Features Designed for single 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 Solid brass in bright brass finish Pre-punched for mounting All the necessary mounting hardware is included for a quick and easy installation USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.