Seller: nysalvage (4,016) 100%, Location: Oneonta, New York, Ships to: US & many other countries, Item: 191931900084 Nice antique cast iron heat grate vent with louvers. It is not marked, the manufacturer is unknown. Nice decorative honeycomb 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: 13 3/4" x 16 7/8", Rough opening- 12 x 15" Depth: 3"