16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Grille Aluminum Bar Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 11 3/4" x 1"

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 8" duct openings

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 24" OR 24" X 14" duct opening (measured at the opening)

+ Product Spec Sheet Outdoor Louver Spec Sheet

+ Product Details Size – 14" x 28" or 28" x 14" is the size for the duct opening measurement only

16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Grille Aluminum Bar Actual Filter Size – 33+ Product Details Size 16" x 24" or 24" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 25. 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