18" x 32" or 32" x 18" Cube Core Eggcrate Return Air Grille 12" Round Duct Pipe Great emphasis has been invested

Great emphasis has been invested in the design of this product to prevent it from kinking in sharp bends & turns and to hold steady and at full diameter in all applications

actual front end outer dimensions are approximately 27 5/8" width X 34 5/8" height

finished in sleek chrome

Marked circles for cutout

+ Product Details Size – 20"w X 8"h is the size for the duct opening measurement only

18" x 32" or 32" x 18" Cube Core Eggcrate Return Air Grille 12" Round Duct Pipe Great emphasis has been invested+ Product Details Size 18" x 32" or 32" x 18" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 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