Seller: nysalvage (4,016) 100%, Location: Oneonta, New York, Ships to: US & many other countries, Item: 191986947190 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. Four original screws remain. The louvers do function as they should with some rust on them. Overall good condition. Please look over the pictures below and ask question when needed. Thanks for your interest. Measures approx: 11 7/8" x 13 3/4", Rough opening- 10 x 12" Depth: 1 3/4"