8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille 14in diameter Design – Easy unrestricted air

Design – Easy unrestricted air flow for your HVAC system

Adjustable airflow control - by rotating the middle disk

1/2” - 3119 PSI

actual front end outer dimensions are approximately 30 5/8" width X 12 5/8" height

8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille 14in diameter Design – Easy unrestricted air+ 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