10" x 18" or 18" x 10" Cube Core Eggcrate Return Air Grille 14" Diameter /* Adding space between bullet

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8" Circular Round Aluminum HVAC Supply Grille Air Diffuser - With Butterfly Damper - Vent Duct Cover

Design – Easy unrestricted air flow for your HVAC system

Its elegant look and fine finish and the natural warmth of oak wood will change the appearance of the entire room

actual front end outer dimensions are approximately 28 5/8" width X 34 5/8" height

10" x 18" or 18" x 10" Cube Core Eggcrate Return Air Grille 14" Diameter /* Adding space between bullet+ 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