Seller: nysalvage (4,016) 100%, Location: Oneonta, New York, Ships to: US & many other countries, Item: 201610551309 Nice antique cast iron heat grate vent register with louvers. Nice waffle design. It is not marked, the manufacturer is unknown. Nice decorative pattern. Its in a nice rust patina. 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: 9 3/4" x 11 3/4", Rough opening- 8" x 10" Depth: 2 1/4"