14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Grille 10in diameter Ideal for Walls & Ceilings:

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

actual front end outer dimensions are 25" Width X 19" Height

Filter Size - 15

+ Product Details Size - 4"w X 28"h is the size for the duct opening measurement only

14" x 34" or 34" x 14" Cube Core Eggcrate Return Air Grille 10in diameter Ideal for Walls & Ceilings:+ Product Details Size 14" x 34" or 34" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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