30" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 32 5/8" X 36 5/8"] w28h28 designed for optimal airflow and

designed for optimal airflow and efficiency

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actual front end outer dimensions are approximately 20 5/8" width X 24 5/8" height

Actual Filter Size – 7 3/4"w x 27 3/4" x 1"

Actual Filter Size – 35 3/4"w x 25 3/4" x 1"

30" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 32 5/8" X 36 5/8"] w28h28 designed for optimal airflow and+ Product Details Size 30"w X 34"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32 5 8" width X 36 5 8" height Actual Filter Size 29 3 4"w x 33 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.