14" x 28" or 28" x 14" Cube Core Eggcrate Return Air Grille Powder-Coated + Product Details Size –

+ Product Details Size – 14" x 22" or 22" x 14" is the size for the duct opening measurement only

Commercial Grade Aluminum - Will Never Rust - Designed for Warehouses

+ Product Details Size – 36"w X 10"h is the size for the duct opening measurement only

+ Product Details Size - 14"w X 22"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 34" OR 34" x 30" duct opening (measured at the opening)

14" x 28" or 28" x 14" Cube Core Eggcrate Return Air Grille Powder-Coated + Product Details Size –+ Product Details Size 14" x 28" or 28" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 16. 5" X 30. 5". 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