18" X 24" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 20 5/8" X 26 5/8"] w32h32 + Product Details Size -

+ Product Details Size - 20"w X 24"h is the size for the duct opening measurement only

you can attain the diameter of the vent

as the multidirectional design ensures consistent temperature control

5" - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE

18" X 24" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 20 5/8" X 26 5/8"] w32h32 + Product Details Size -+ Product Details Size 18"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 26 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