matching set of c. 1920's interior residential "japanned" or baked black enameled pressed and folded steel louvered baseboard registers or grates fabricated by or for the hess warming & ventilating co., chicago, il. the heat registers were salvaged from a chicago bungalow residence undergoing interior renovations. very simple and unassuming mission style design. measure 15 1/8 x 12 inches. priced for the pair.