25" X 26" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 27 5/8" X 28 5/8"] Aluminum - Cube Core + How To Measure A

+ How To Measure A Round Vent Overall Size:

+ Product Details Size - 20"w X 36"h is the size for the duct opening measurement only

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The tool-free latch allows hassle-free maintenance

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25" X 26" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 27 5/8" X 28 5/8"] Aluminum - Cube Core + How To Measure A+ Product Details Size 25"w X 26"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27 5 8" width X 28 5 8" height Actual Filter Size 24 3 4"w x 25 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.