40" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 42 5/8" X 22 5/8"] Color_Red Oak Wood actual front end outer dimensions

actual front end outer dimensions are approximately 16 5/8" width X 30 5/8" height

Mounted with frame and bayonet joint which are included

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+ Product Details Size - 12"w X 16"h is the size for the duct opening measurement only

40" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 42 5/8" X 22 5/8"] Color_Red Oak Wood actual front end outer dimensions+ Product Details Size 40"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 42 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