12" x 28" or 28" x 12" Cube Core Eggcrate Return Air Grille w32h32 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 20 5/8" width X 14 5/8" height

+ Product Details Size - 22"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 4"w X 36"h is the size for the duct opening measurement only

ensuring a perfect fit

+ Product Description Upgrade your HVAC system with our 6" Round Air Vent Supply Grille

12" x 28" or 28" x 12" Cube Core Eggcrate Return Air Grille w32h32 actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 20 5 8" width X 14 5 8" height + Product Details Size 22"w X 16"h is the size for the duct opening measurement only