10" x 18" or 18" x 10" Cube Core Eggcrate Return Air Grille 14" Diameter Design – Easy unrestricted air

Design – Easy unrestricted air flow for your HVAC system

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+ Product Details Size – 34"w X 8"h is the size for the duct opening measurement only

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10" x 18" or 18" x 10" Cube Core Eggcrate Return Air Grille 14" Diameter Design – Easy unrestricted air+ Product Details Size 10" x 18" or 18" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" X 19. 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