28" x 36" or 36" x 28" Cube Core Eggcrate Return Air Grille ceiling + Product Details Size -

+ Product Details Size - 26"w X 10"h is the size for the duct opening measurement only

75"H – fits a 12" X 6" duct opening

ensuring a clean and smooth appearance in any environment

baffles and plaster frames available

+ Product Details

28" x 36" or 36" x 28" Cube Core Eggcrate Return Air Grille ceiling + Product Details Size -+ Product Details Size 28" x 36" or 36" x 28" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 29. 75" X 37. 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