Mission Style Mail Slot for Front Doors (Antique Brass Finish) - constructed from solid brass and hand finished. Each pieces measures 9 3/4 inch wide by 2 7/8 inch tall by 3/4 inch thick. The slot is spring loaded to keep mail safely inside, and leaves safely outside. This mail slot was made as a front style only with two screws that attach from the rear. If you desire a matching back plate - please select the "Interior Chute" option to add an Interior Mail Slot Chute in a matching finish. This is recommended for exterior doors with a door thickness of 1 3/4 inch or greater. The additional mail chute part would have a matching width and a projection of 2 Inches. This mail slot has an opening of approximately 1 1/2 inches by 7 inches.