36" X 10" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 12 5/8"] Color_Black this grille boasts a natural

this grille boasts a natural warmth and fine finish

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 20" duct opening (measured at the opening)

The first number in a grille size

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

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 this grille boasts a natural+ 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