Seller: nysalvage (4,226) 100%, Location: Oneonta, New York, Ships to: US & many other countries, Item: 191583112768 Material: Cast Iron, Details: Very nice large antique cast iron cold air return with a Gothic pattern. It is not marked the manufacturer is unknown. It has ols chippy light green paint on it as well as some rust and very minor pitting. These large grates are becoming harder and harder to find. Overall it is in good usable condition. Please look over the pictures and ask questions when needed. Thanks for looking. Measures approx: 18 1/4" X 26 3/4" overall, Would need a rough opening of 24 1/2" X 16 1/8"