36" X 24" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 26 5/8"] w16h16 actual front end outer dimensions

actual front end outer dimensions are approximately 31 5/8" width X 24 5/8" height -

then you'll need a 14-inch round vent

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+ Product Details Size - 32"w X 25"h is the size for the duct opening measurement only

36" X 24" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 26 5/8"] w16h16 actual front end outer dimensions+ Product Details Size 36"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 26 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