26" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter white + Product Details Perfect Fit CRFG2028 Width_14in 4 X 12 Is

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 34" OR 34" x 18" duct opening (measured at the opening)

High Quality – High grade steel construction with easy unrestricted air flow for your HVAC system

Rigid Built For External Use – The sturdy and rigid design features noise-free components that eliminate vibration and excess noise to the louvers

Vertical blades in the back

+ Product Details Size - 30"w X 6"h is the size for the duct opening measurement only

26" x 34" Cube Core Eggcrate Return Air Filter Grille for 1" Filter white + Product Details Perfect Fit CRFG2028 Width_14in 4 X 12 Is + Product Details Perfect Fit & Easy Sizing Designed for a 18" x 34" OR 34" x 18" duct opening (measured at the opening) High Quality – High grade steel construction with easy unrestricted air flow for your HVAC system