40" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 42 5/8" X 22 5/8"] Powder-Coat + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 24" OR 24" x 20" duct opening (measured at the opening)

Think of the diameter as a straight line from one end to the other

+ Product Details Size - 20"w X 20"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 16"h is the size for the duct opening measurement only

40" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 42 5/8" X 22 5/8"] Powder-Coat + Product Details Perfect Fit+ Product Details Size 40"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 42 5 8" width X 22 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