6" x 28" or 28" x 6" Cube Core Eggcrate Return Air Grille Copper Coil Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 10" duct openings

+ Product Details Size – 10" x 34" or 34" x 10" is the size for the duct opening measurement only

High diffusion induction rates result in rapid temperature and velocity equalization of the mixed air mass well above the zone of occupancy

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The total outer size of this grille is the listed size plus 2 and 5/8"

6" x 28" or 28" x 6" Cube Core Eggcrate Return Air Grille Copper Coil Ideal for Walls & Ceilings:+ Product Details Size 6" x 28" or 28" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 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