10" X 20" or 20" X 10" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 11.75 X 21.75] Color_Red Oak + Product Details Size –

+ Product Details Size – Duct end cap is 18" X 6" | 26-gauge galvanized steel end cap

+ Product Details Size – 36"w X 10"h is the size for the duct opening measurement only

+ Product Details Size - 6"w X 18"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 32" OR 32" X 14" duct opening (measured at the opening)

actual front end outer dimensions are approximately 26 5/8" width X 30 5/8" height

10" X 20" or 20" X 10" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 11.75 X 21.75] Color_Red Oak + Product Details Size –+ Product Details Size 10"w X 20"h or 20" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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