20" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 12 5/8"] w10h10 display === '') { dd

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+ Product Details Size - 26"w X 4"h is the size for the duct opening measurement only

If your hole is 14" wide by 20" tall

+ Product Details Size - 20"w X 28"h is the size for the duct opening measurement only

20" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 12 5/8"] w10h10 display === '') { dd+ Product Details Size 20"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 12 5 8" height High Quality high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall & ceiling Design removable frame for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on your