This large broiler pan is found in the bottom of your oven and is used to catch drippings from broiling foods. This part includes the grate and bottom pan and is made of porcelain. The grate measures 15-1/2 inches wide by 13 inches deep and the pan is about 17 inches wide by 13 inches deep. No tools are required to replace this item, simply pull out the lower drawer of your range, pull down the front of the drawer, slide the pan out and slide the new one into place. This is a genuine part sourced right from the manufacturer.