16" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 18 5/8" X 24 5/8"] flat stamped steel Efficient Airflow Design: The slots

Efficient Airflow Design: The slots are meticulously angled to diversify airflow in two directions

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

Each grille is securely shrink-wrapped with a cardboard backing to prevent damage during shipment

+ Product Details Size – 10" X 2" is the size for the duct opening (floor/vent hole) measurement only

actual front end outer dimensions are approximately 30 5/8" width X 20 5/8" height

16" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 18 5/8" X 24 5/8"] flat stamped steel Efficient Airflow Design: The slots+ Product Details Size 16"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 18 5 8" width X 24 5 8" height Actual Filter Size 15 3 4"w x 21 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.