22" x 36" or 36" x 22" Cube Core Eggcrate Return Air Grille Compatible with Duct 6" + Product Details Size -

+ Product Details Size - 30"w X 12"h is the size for the duct opening measurement only

For enhanced airflow control

actual front end outer dimensions are approximately 16 5/8" width X 32 5/8" height

High Quality – Solid rigid steel body for durability and reliability

High Quality – Commercial grade aluminum - will never rust - designed for warehouses

22" x 36" or 36" x 22" Cube Core Eggcrate Return Air Grille Compatible with Duct 6" + Product Details Size -+ Product Details Size 22" x 36" or 36" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 75" X 37. 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