36" X 30" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged- [Outer Dimensions: 38 5/8" X 32 5/8"] w34h34 designed for optimal airflow and

designed for optimal airflow and efficiency

+ Product Details Size - 26"w X 4"h is the size for the duct opening measurement only

this filter grille never rusts and withstands long-term use in any environment

+ Product Details Size - 10"w X 14"h is the size for the duct opening measurement only

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

36" X 30" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged- [Outer Dimensions: 38 5/8" X 32 5/8"] w34h34 designed for optimal airflow and+ Product Details Size 36"w X 30"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 32 5 8" height High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Ceiling Design Fixed hinged for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on your fingers and