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

+ Product Details Size – 8" x 14" or 14" x 8" is the size for the duct opening measurement only

Operating from -40°F to +248°F

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+ Product Description Maximize the efficiency of your ventilation system with our top-of-the-line HVAC grilles and registers

+ Product Details Size - 24"w X 12"h is the size for the duct opening measurement only

10" x 30" or 30" x 10" Cube Core Eggcrate Return Air Grille sidewall + 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