14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Grille Insulated Line Set ensuring that you find the

ensuring that you find the perfect fit for your ventilation needs

Actual Filter Size – 15 3/4"w x 7 3/4" x 1"

75"H – fits a 16" X 12" duct opening

+ Product Details Size – 6" x 30" or 30" x 6" is the size for the duct opening measurement only

+ Product Details Size – 12" x 16" or 16" x 12" is the size for the duct opening measurement only

14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Grille Insulated Line Set ensuring that you find the+ Product Details Size 14" x 18" or 18" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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