Heavy cast iron hinged porthole window type of piece (no glass) that looks like it most previously had screen mesh covering the openings. 2" thick face with a rough opening of 15.5" H x 24.25". Has the markings MODEL No. 2 on it. There's some kind of plaque that's covered up by paint, but we'll let you be the one to chip it off. :) Definitely an old piece. Ready to be repurposed! Let us know what you do with it by sending photos to [email protected]!