16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Grille 14in diameter Think of the diameter as

Think of the diameter as a straight line from one end to the other

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75" Height

engineered for seamless 360-degree airflow in T-bar ceilings

This aluminum adjustable louvered garage vent allows air ventilation and circulation in your garage 24 hours a day

16" x 22" or 22" x 16" Cube Core Eggcrate Return Air Grille 14in diameter Think of the diameter as+ Product Details Size 16" x 22" or 22" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 23. 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