26" X 30" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 28 5/8" X 32 5/8"] w10h10 + Product Details Size -

+ Product Details Size - 20"w X 30"h is the size for the duct opening measurement only

+ Product Details Size - 34"w X 26"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 25" OR 25" x 20" duct opening (measured at the opening)

actual front end outer dimensions are approximately 22 5/8" width X 8 5/8" height

26" X 30" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 28 5/8" X 32 5/8"] w10h10 + Product Details Size -+ Product Details Size 26"w X 30"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 28 5 8" width X 32 5 8" height Actual Filter Size 25 3 4"w x 29 3 4" x 1" High quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on