6" x 20" or 20" x 6" Cube Core Eggcrate Return Air Grille Color_Aluminum + Product Details Size –

+ Product Details Size – 12"w X 32"h is the size for the duct opening measurement only

+ 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

+ Product Description Maximize the efficiency of your ventilation system with our top-of-the-line HVAC grilles and registers

offering maximum flexibility

6" x 20" or 20" x 6" Cube Core Eggcrate Return Air Grille Color_Aluminum + Product Details Size –+ 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