36" X 26" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 28 5/8"] w8h8 this model ensures top-notch air

this model ensures top-notch air quality

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 30" OR 30" x 20" duct opening (measured at the opening)

+ Product Details Size – 26"w X 8"h is the size for the duct opening measurement only

Actual Filter Size – 29 3/4"w x 35 3/4" x 1"

Powder-Coat Finish – smooth

36" X 26" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 28 5/8"] w8h8 this model ensures top-notch air+ Product Details Size 36"w X 26"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 36 5 8" width X 28 5 8" height Actual Filter Size 35 3 4"w x 25 3 4" x 1" High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter.