32" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 34 5/8" X 20 5/8"] Powder Coated It has an outer surface

It has an outer surface made of high-quality aluminum foil and an inner surface made of metalized PET with inside high-tensile spring steel wire

Actual Filter Size – 31 3/4"w x 11 3/4" x 1"

the actual front end outer dimensions are 7" in diameter

actual front end outer dimensions are approximately 20 5/8" width X 22 5/8" height -

Design – removable frame for easy filter change & cleaning - uses a 1" thick filter

32" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 34 5/8" X 20 5/8"] Powder Coated It has an outer surface+ Product Details Size 32"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 34 5 8" width X 20 5 8" height Actual Filter Size 31 3 4"w x 17 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.