Seller: nysalvage (4,010) 100%, Location: Oneonta, New York, Ships to: US & many other countries, Item: 191871274630 Nice large antique cast iron heat grate vent with louvers. It is marked with a paten date 1886 but the manufacturer is unknown. Nice decorative Gothic pattern. The original finish is almost completely worn away and rust has taken its place. There is some very minor pitting nothing that would be noticeable. The louvers are a little tight but they do function. Overall good condition. Please look over the pictures below and ask question when needed. Thanks for your interest. Measures approx: 17" x 13 7/8", Rough opening- 12" X 15"