8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille 2-Way actual front end outer dimensions

actual front end outer dimensions are approximately 32 5/8" width X 36 5/8" height

actual front end outer dimensions are approximately 18 5/8" width X 22 5/8" height

actual front end outer dimensions are approximately 14 5/8" width X 20 5/8" height

Design – Equipped with lever for full airflow control

8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille 2-Way actual front end outer dimensions+ Product Details Size 8" x 28" or 28" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 29. 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