18" X 30" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 32 5/8"] w26h26 you can attain the diameter

you can attain the diameter of the vent

We are proud to have served over 5

875" width X 21

actual front end outer dimensions are approximately 4

18" X 30" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 20 5/8" X 32 5/8"] w26h26 you can attain the diameter+ Product Details Size 18"w X 30"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 32 5 8" height High Quality high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location sidewall and ceiling Design removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on