Antique Large Cast Iron Floor Heating Vent Grate With Louvres. The louvres are working and smooth moving. Grate measures 14 inches by 11 inches by 1 3/4 inches deep. The item "Antique Large Cast Iron Floor Heating Vent Grate Eith Louvres" is in sale since Friday, March 29, 2019. This item is in the category "Antiques\Architectural & Garden\Hardware\Heating Grates & Vents".The seller is "1msvanman1" and is located in North Chili, New York. This item can be shipped to United States.