8" x 34" or 34" x 8" Cube Core Eggcrate Return Air Grille sidewall Actual Filter Size – 29

Actual Filter Size – 29 3/4"w x 27 3/4" x 1"

+ Product Details Size - 12"w X 18"h X 2"d (for duct opening measurement only)

Full Control – Full 190 degrees control of air direction vertically & horizontally

+ Product Details Size - 18"w X 28"h is the size for the duct opening measurement only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 4" duct openings

8" x 34" or 34" x 8" Cube Core Eggcrate Return Air Grille sidewall Actual Filter Size – 29+ Product Details Size 8" x 34" or 34" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 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