4-inch x 10-inch American Walnut Wood Flush Mount Floor Register Vent Cover Grille Unfinished by WELLAND, 3/4" in Thickness Fits a duct size opening of 4" x 10", Overall dimension is 12.3" x 6.75" x 0.75" Made of Unfinished Solid Grade A American Walnut Wood Louvered Design with Frame Flush-mount vent sits flush with 3/4" hardwood floor Authentic WELLAND Flooring Product Made of two parts ,Easy to install Louvered Design with Frame Beautiful and High Quality Authentic WELLAND product Fits a duct size opening of 4&#034; x 10&#034; Overall dimension is 12.3&#034; x 6.75&#034; x 0.75&#034; Flush-mount vent sits flush with 3/4&#034; hardwood floor Measure the size of the duct opening. Do not measure your current floor register. Fits a duct size opening of: 4&#034; x 10&#034; you must measure the size of the duct opening