8" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 10 5/8" X 24 5/8"] w8h8 accordion-header { display: flex

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75" width X 15

you can attain the diameter of the vent

+ Product Details Size - 22"w X 12"h is the size for the duct opening measurement only

8" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 10 5/8" X 24 5/8"] w8h8 accordion-header { display: flex+ Product Details Size 18"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 24 5 8" height Actual Filter Size 17 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 Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on