28" x 32" or 32" x 28" Cube Core Eggcrate Return Air Grille w32h32 box-shadow: 0 0 6px rgba(82

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please note that the total outer dimensions of the grille measure 16" in diameter

Actual Filter Size – 13 3/4"w x 15 3/4" x 1"

+ Product Details Size – 10"w X 16"h is the size for the duct opening measurement only

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28" x 32" or 32" x 28" Cube Core Eggcrate Return Air Grille w32h32 box-shadow: 0 0 6px rgba(82+ Product Details Size 28" x 32" or 32" x 28" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 29. 75" X 33. 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