32" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-4.2 Yellow + Product Details Size -

+ Product Details Size - 14"w X 10"h is the size for the duct opening measurement only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 12" duct openings

+ Product Details Size – 24"w X 16"h is the size for the duct opening measurement only

Actual Filter Size – 35 3/4"w x 21 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 34" Or 34" x 32" duct opening (measured at the opening)

32" x 6" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Color_R-4.2 Yellow + Product Details Size -Strong aluminum frame & cube core that never rusts Rigid design with noise free components quiet airflow Cubic core eggcrate design has the highest rate of airflow efficiency