Seller: nysalvage (4,010) 100%, Location: Oneonta, New York, Ships to: US & many other countries, Item: 191905322178 Nice 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. 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: 12" x 15 7/8", Rough opening- 10 x 13 7/8" Depth: 3"