10" x 32" or 32" x 10" Cube Core Eggcrate Return Air Grille d + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 28" OR 28" X 16" duct opening (measured at the opening)

+ Product Details Size - 16"w X 16"h X 2"d (for duct opening measurement only)

+ Product Details Size – 12" x 22" or 22" x 12" is the size for the duct opening measurement only

+ Product Details Size – 8"w X 36"h is the size for the duct opening measurement only

+ Product Details Size – 32"w X 36"h is the size for the duct opening measurement only

10" x 32" or 32" x 10" Cube Core Eggcrate Return Air Grille d + Product Details Perfect Fit+ Product Details Size 10" x 32" or 32" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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