16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille ceiling + Product Details Size –

+ Product Details Size – 28"w X 22"h is the size for the duct opening measurement only

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

ensuring consistent and efficient air distribution throughout your space

+ Product Details Size – 14" x 20" or 20" x 14" is the size for the duct opening measurement only

16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille ceiling + Product Details Size –+ Product Details Size 16" x 34" or 34" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 35. 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