8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille 14in diameter Mounted with frame and bayonet

Mounted with frame and bayonet joint which are included

with actual outer dimensions of 18

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 16" duct openings

Design – Easy unrestricted air flow for your HVAC system

no sharp edges

8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille 14in diameter Mounted with frame and bayonet+ 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