36" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 20 5/8"] w36h36 + Product Details Size -

+ Product Details Size - 28"w X 22"h is the size for the duct opening measurement only

+ Product Details Size - 25"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 25"w X 25"h is the size for the duct opening measurement only

Pressure Rating: 2100 to 7000 PSI

36" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 20 5/8"] w36h36 + Product Details Size -+ Product Details Size 36"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 20 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