18" x 30" or 30" x 18" Cube Core Eggcrate Return Air Grille 8in diameter Actual Filter Size – 24

Actual Filter Size – 24 3/4"w x 9 3/4" x 1"

75" width X 15

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height -

+ Product Details Size – 18" x 24" or 24" x 18" is the size for the duct opening measurement only

+ Product Details Size - 8"w X 26"h is the size for the duct opening measurement only

18" x 30" or 30" x 18" Cube Core Eggcrate Return Air Grille 8in diameter Actual Filter Size – 24+ Product Details Size 18" x 30" or 30" x 18" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 75" X 31. 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