30" x 30" Cube Core Eggcrate Return Air Grille steel 75"H – fits a 18"

75"H – fits a 18" X 6" duct opening

modern look and superior functionality

Ideal for Walls & Ceilings: Designed for seamless installation in standard 16" X 16" duct openings

actual front end outer dimensions are approximately 32 5/8" width X 26 5/8" height

5" - SEE BELOW IN DESCRIPTION How To Measure A Grille

30" x 30" Cube Core Eggcrate Return Air Grille steel 75"H – fits a 18"+ Product Details Size 30" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 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 electric