14" X 20" Or 20" X 14" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 15.75 X 21.75] w26h26 + Product Details Size -

+ Product Details Size - 10"w X 34"h is the size for the duct opening measurement only

+ Product Details Size & Compatibility – The size of sheet metal pipe is 4" round x 24"long

+ Product Details Size – Stick-on collar is 9" and it is compatible with duct 9"

+ Product Details Size - 10"w X 32"h is the size for the duct opening measurement only

+ Product Details Size – 12"w X 30"h is the size for the duct opening measurement only

14" X 20" Or 20" X 14" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 15.75 X 21.75] w26h26 + Product Details Size -+ Product Details Size 14"w X 20"h or 20" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" width X 21. 75" height. High Quality High grade steel construction meant for high foot traffic areas. Installation Location Floor. Design Easy drop in installation. Powder Coat Finish Smooth, shiny, scratch resistant, with no sharp edges. Looks like it was just waxed. Quality Packaging Carefully