Grate weighs about 48 pounds, The dimensions of the top are 32 Diameter it fits a rough opening 30 diameter. The item "Round Antique Cast Iron Floor Air Return Grate Vent, 30 Diam. Rough opening" is in sale since Tuesday, July 3, 2018. This item is in the category "Antiques\Architectural & Garden\Hardware\Heating Grates & Vents".The seller is "jimmy164" and is located in Bowerston, Ohio. This item can be shipped to United States.