18" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 36 5/8"] Powder Coated accordion-title { font-size: 18px

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please note that the total outer dimensions of the grille measure 8" in diameter

The grille comes with all necessary screws for a secure fit

UPC – 622417529068

18" X 34" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 36 5/8"] Powder Coated accordion-title { font-size: 18px+ Product Details Size 18"w X 34"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 36 5 8" height Actual Filter Size 17 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.