30" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 32 5/8" X 22 5/8"] with filter this guard ensures long-lasting protection

this guard ensures long-lasting protection and security

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+ Product Details Size - 10"w X 10"h is the size for the duct opening measurement only

This aluminum adjustable louvered garage vent allows air ventilation and circulation in your garage 24 hours a day

30" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 32 5/8" X 22 5/8"] with filter this guard ensures long-lasting protection+ Product Details Size 30"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32 5 8" width X 22 5 8" height Actual Filter Size 29 3 4"w x 19 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.