18" x 32" or 32" x 18" Cube Core Eggcrate Return Air Grille w14h14 + Product Details Outer dimensions:

+ Product Details Outer dimensions: 19

+ Product Details Size – 6" x 20" or 20" x 6" is the size for the duct opening measurement only

+ Product Details Size – 28" x 34" or 34" x 28" is the size for the duct opening measurement only

this grille offers durability and resistance to rust and corrosion

18" x 32" or 32" x 18" Cube Core Eggcrate Return Air Grille w14h14 + Product Details Outer dimensions:+ 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