29" X 22" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 31 5/8" X 24 5/8"] w24h24 + Product Details Size -

+ Product Details Size - 34"w X 26"h is the size for the duct opening measurement only

+ Product Details Size – 18"w X 36"h is the size for the duct opening measurement only

no exceptions

Design – Fixed Hinged for easy filter change & cleaning - uses a 1" thick filter

Insulation density is 30kgs/cbm = 0

29" X 22" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 31 5/8" X 24 5/8"] w24h24 + Product Details Size -+ Product Details Size 29"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31 5 8" width X 24 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