30" X 28" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 32 5/8" X 30 5/8"] w34h34 actual front end outer dimensions

actual front end outer dimensions are approximately 16 5/8" width X 24 5/8" height

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angle the louvers up for efficient cooling

actual front end outer dimensions are approximately 28 5/8" width X 20 5/8" height

30" X 28" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 32 5/8" X 30 5/8"] w34h34 actual front end outer dimensions+ Product Details Size 30"w X 28"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32 5 8" width X 30 5 8" height Actual Filter Size 29 3 4"w x 27 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.