26" X 28" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 28 5/8" X 30 5/8"] white } /* CONTENT SPACING */

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If your hole is 14" wide by 20" tall

+ Product Details Size – 18"w X 32"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 10 5/8" width X 22 5/8" height

actual front end outer dimensions are approximately 22 5/8" width X 36 5/8" height

26" X 28" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 28 5/8" X 30 5/8"] white } /* CONTENT SPACING */+ Product Details Size 26"w X 28"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 28 5 8" width X 30 5 8" height Actual Filter Size 25 3 4"w x 27 3 4" x 1" High quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on