Seller: nysalvage (4,177) 100%, Location: Oneonta, New York, Ships to: US & many other countries, Item: 191941499855 Nice extra large antique cast iron heat grate vent with louvers. It is not marked, the manufacturer is unknown. Nice decorative gothic pattern. Original rust patina. Overall good condition. Please look over the pictures below and ask question when needed. Thanks for your interest. Measures approx: 23" wide x 29" tall overall , Rough opening- 20 1/8" x 26 1/8" Depth: 3 3/4"