24" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 1-Way + Product Details Perfect Fit 4 X 12 Is CRFG2028 Width_14in

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 30" OR 30" x 28" duct opening (measured at the opening)

no professional tools needed

Great emphasis has been invested in the design of this product to prevent it from kinking in sharp bends & turns and to hold steady and at full diameter in all applications

reducing energy costs and maximizing HVAC system lifespan

+ Product Details Size - 30"w X 32"h is the size for the duct opening measurement only

24" x 26" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 1 Way + Product Details Perfect Fit 4 X 12 Is CRFG2028 Width_14in + Product Details Perfect Fit & Easy Sizing Designed for a 28" x 30" OR 30" x 28" duct opening (measured at the opening) no professional tools needed