30" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 32 5/8" X 20 5/8"] Color_Red Oak Wood which the interior PET provides

which the interior PET provides

+ Product Details Size - 30"w X 16"h is the size for the duct opening measurement only

Complies with industry standards of USA: ASTM D-882

Every grille has a front end frame that will overlap at the wall joint

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30" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 32 5/8" X 20 5/8"] Color_Red Oak Wood which the interior PET provides+ Product Details Size 30"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32 5 8" width X 18 5 8" height. Actual Filter Size 29 3 4"w x 15 3 4" x 1" 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.