12" x 24" or 24" x 12" Cube Core Eggcrate Return Air Grille w32h32 + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 10" or 10" x 8" duct opening (measured at the opening)

+ Product Details Size - 6"w X 24"h X 2"d (for duct opening measurement only)

Equipped with a lever to adjust airflow to your preference

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 34" OR 34" x 20" duct opening (measured at the opening)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 22" OR 22" x 28" duct opening (measured at the opening)

12" x 24" or 24" x 12" Cube Core Eggcrate Return Air Grille w32h32 + Product Details Perfect Fit+ Product Details Size 12" x 24" or 24" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 25. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing