36" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 12 5/8"] Color_Black Operating temperature from -40°f to

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

+ Product Details Size - 24"w X 28"h is the size for the duct opening measurement only

The first number in a grille size

Slots are angled to diversify the airflow in 2 way direction

36" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 12 5/8"] Color_Black Operating temperature from -40°f to+ Product Details Size 36"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 12 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