6" x 20" or 20" x 6" Cube Core Eggcrate Return Air Grille Color_Aluminum actual front end outer dimensions

actual front end outer dimensions are 13

Built-In Locking System – Comes with a permanently attached eight-tumbler lock and a supplied key for added security

please note that the total outer dimensions of the grille measure 16" in diameter

actual front end outer dimensions are approximately 22 5/8" width X 22 5/8" height

+ Product Details Size – 34"w X 30"h is the size for the duct opening measurement only

6" x 20" or 20" x 6" Cube Core Eggcrate Return Air Grille Color_Aluminum actual front end outer dimensions+ Product Details Size 6" x 20" or 20" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" X 21. 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