10" X 6" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 12 5/8" X 8 5/8"] w28h28 + Product Details Size -

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

+ Product Details Size – 20"w X 8"h is the size for the duct opening measurement only

please note that the total outer dimensions of the grille measure 10" in diameter

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10" X 6" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 12 5/8" X 8 5/8"] w28h28 + Product Details Size -+ Product Details Size 10"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 12 5 8" width X 8 5 8" height. High Quality high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Ceiling Design Fixed hinged for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on your fingers and