Fits 20x8 Duct Opening Stamped Steel Return Air Grille Vent Cover Grille for Sidewall and Ceiling in White Surface Dimensions: 21.75"W X 9.75"H (20" W x 8" H Duct Opening) If your duct opening size

If your duct opening size is 10” x 6”

Three way air deflection design with bright white face and black damper in the back

guaranteeing that it arrives at your home in perfect condition

buy a 16x25 grille

Do not use outside measurement for size selection or it would be too bit to fit

Fits 20x8 Duct Opening Stamped Steel Return Air Grille Vent Cover Grille for Sidewall and Ceiling in White Surface Dimensions: 21.75"W X 9.75"H (20" W x 8" H Duct Opening) If your duct opening sizeThe Listed size 20"x8" is for inside duct opening measurement, actual outside dimension is 21. 75"x9. 75" Stamped Face Steel Construction with 1 2" fin spacing for high air flow applications. Screws are included for easy installation White Powder coating with matte finish Individually packed with cardboard box for ultra protection