22" x 34" or 34" x 22" Cube Core Eggcrate Return Air Grille Material_Aluminum provide precise damper control and

provide precise damper control and superior air dispersion

Actual Filter Size – 24 3/4"w x 25 3/4" x 1"

actual front end outer dimensions are approximately 18 5/8" width X 26 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 4" duct openings

+ Product Details Size - 30"w X 18"h is the size for the duct opening measurement only

22" x 34" or 34" x 22" Cube Core Eggcrate Return Air Grille Material_Aluminum provide precise damper control and+ Product Details Size 22" x 34" or 34" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 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