36" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 22 5/8"] 18" Diameter Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 11 3/4" x 1"

These grilles and registers give you an extra measure of quality that are visible to your family members and house guests

positioning supply and return grills accordingly

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the actual front end outer dimensions are 8" in diameter

36" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 22 5/8"] 18" Diameter Actual Filter Size – 23+ Product Details Size 36"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 22 5 8" height 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. Our filter grille latch is easy to use on