10" x 30" or 30" x 10" Cube Core Eggcrate Return Air Grille Aluminum Bar + Product Details Size –

+ Product Details Size – 6" x 30" or 30" x 6" is the size for the duct opening measurement only

+ Product Details Size – 14"w X 8"h is the size for the duct opening measurement only

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High Quality – Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control

+ Product Details Size - 14"w X 25"h is the size for the duct opening measurement only

10" x 30" or 30" x 10" Cube Core Eggcrate Return Air Grille Aluminum Bar + Product Details Size –+ Product Details Size 10" x 30" or 30" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 31. 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