WELLAND 4 Inch X 12 Inch Cumaru Hardwood Vent Floor Register Flush Mount Unfinished DIMENSION - Fits a duct size opening of: 4" x 12" (4" x 12" Does not refer to outside dimensions) Listed product sizes refer to the duct opening measurements, not the register itself; Flush-mount vent sits flush with 3/4" hardwood floor PREMIUM MATERIAL - Made of Unfinished Solid Cumaru; Real color may be a slight different due to screen display difference; Easy to stain and poly; Please avoid installing the product in high traffic areas DESIGN - Flush Mount with frame; Louvered Wood Design floor vent cover APPLICATION - Wall registers; Wood registers; Air registers; Heat registers; Register covers;Floor vent/Grille WARNING - BEWARE of other sellers selling WELLAND vents. WELLAND? vents can only be sold by WELLAND