6" x 28" or 28" x 6" Cube Core Eggcrate Return Air Grille Width_20in Actual Filter Size – 25

Actual Filter Size – 25 3/4"w x 33 3/4" x 1"

+ Product Details Size – 22"w X 26"h is the size for the duct opening measurement only

Powder paint coating - White

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 6" duct openings

6" x 28" or 28" x 6" Cube Core Eggcrate Return Air Grille Width_20in Actual Filter Size – 25+ 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