6" x 20" or 20" x 6" Cube Core Eggcrate Return Air Grille Color_Aluminum Built-In Locking System – Comes

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

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

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

and beautiful

Actual Front End Outer Dimensions Are 12" Width X 6" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

6" x 20" or 20" x 6" Cube Core Eggcrate Return Air Grille Color_Aluminum Built-In Locking System – Comes+ 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