32" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 34 5/8" X 38 5/8"] Aluminum Pressure rating: 2300 to 6500

Pressure rating: 2300 to 6500 psi

only measure the "hole" in the wall/duct

+ Product Details Size - 28"w X 12"h is the size for the duct opening measurement only

Operating temperature from -40°f to +248°f [-40°c to +120°c]

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

32" X 36" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 34 5/8" X 38 5/8"] Aluminum Pressure rating: 2300 to 6500+ Product Details Size 32"w X 36"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 34 5 8" width X 38 5 8" height Actual Filter Size 31 3 4"w x 35 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.