24" x 36" or 36" x 24" Cube Core Eggcrate Return Air Grille Curved Blade Steel flex-shrink: 0

flex-shrink: 0

actual front end outer dimensions are approximately 27 5/8" width X 28 5/8" height

+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

+ Product Details Size - 4"w X 22"h is the size for the duct opening measurement only

+ Product Details Size – 26"w X 32"h is the size for the duct opening measurement only

24" x 36" or 36" x 24" Cube Core Eggcrate Return Air Grille Curved Blade Steel flex-shrink: 0+ Product Details Size 24" x 36" or 36" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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