Seller: nysalvage (3,743) 100%, Location: Oneonta, New York, Ships to: US & many other countries, Item: 191905260936 Nice large antique cast iron heat grate vent with louvers. It is not marked, the manufacturer is unknown. Nice decorative pattern. Some of its original black paint remains. Nice Arts and Crafts style. The louvers do function as they should. Overall good condition. Please look over the pictures below and ask question when needed. Thanks for your interest. Measures approx: 22 1/8" x 18 1/4", Rough opening- 20" X 15 7/8"