8" x 18" or 18" x 8" Cube Core Eggcrate Return Air Grille 14in diameter Actual Filter Size – 35

Actual Filter Size – 35 3/4"w x 27 3/4" x 1"

+ Product Details Size - 14"w X 25"h is the size for the duct opening measurement only

With a sleek

Close For Winter To Prevent The Cold

8" x 18" or 18" x 8" Cube Core Eggcrate Return Air Grille 14in diameter Actual Filter Size – 35+ Product Details Size 8" x 18" or 18" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 19. 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