15 1/2" in diameter x 1/2" thick. The center hole is 6 1/4" in diameter and the star is 7 1/4" across.This is in very good condition. There are no chips or cracks in the cast iron. The center star shape comes out and replaces easily. The items are described as accurately as possible based upon information that I have available. The item "Large Ornate Cast Iron Victorian Floor Wall Grate Heating Vent Register 15 1/2" is in sale since Tuesday, October 17, 2017. This item is in the category "Antiques\Architectural & Garden\Hardware\Heating Grates & Vents". The seller is "gbert50" and is located in Oceanside, California. This item can be shipped to United States.