14" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 16 5/8" X 8 5/8"] Color_Red Oak Wood + Product Details Size -

+ Product Details Size - The listed 4" diameter refers specifically to the size of the duct opening

actual front end outer dimensions are approximately 23

ensuring that you find the perfect fit for your ventilation needs

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

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14" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 16 5/8" X 8 5/8"] Color_Red Oak Wood + Product Details Size -+ Product Details Size 14"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 16 5 8" width X 8 5 8" height Actual Filter Size 13 3 4"w x 5 3 4" x 1" High quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille