20" X 40" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 42 5/8"] w36h36 + Product Details Size –

+ Product Details Size – 18"w X 20"h is the size for the duct opening measurement only

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

85" width X 25

+ Product Details Size - 25"w X 16"h is the size for the duct opening measurement only

20" X 40" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 42 5/8"] w36h36 + Product Details Size –+ Product Details Size 20"w X 40"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 42 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