22" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 22 5/8"] Powder Coated this flex duct decreases the Drop Ceilings / Aluminum The set includes a FG1836 HP-1

this flex duct decreases the pressure loss and provides a more hygienic environment

Scratch-Resistant

+ Product Details Size - 30"w X 25"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 18 5/8" width X 26 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 14" duct opening (measured at the opening)

22" X 20" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 24 5 8" X 22 5 8"] Powder Coated this flex duct decreases the Drop Ceilings Aluminum The set includes a FG1836 HP 1 this flex duct decreases the pressure loss and provides a more hygienic environment Scratch Resistant