14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Grille Insulated Line Set actual front end outer dimensions

actual front end outer dimensions are approximately 20 5/8" width X 8 5/8" height

ensuring that you find the perfect fit for your ventilation needs

75"H – fits a 16" X 12" duct opening

75" width X 35

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

14" x 18" or 18" x 14" Cube Core Eggcrate Return Air Grille Insulated Line Set actual front end outer dimensions+ 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