10"w X 8"h [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 9.75"H] w40h40 + Product Details Size &

+ Product Details Size & Compatibility – The size of the side round ceiling box is 12" X 12" X 4" and it is compatible with duct 4"

that will overlap at the wall joint

ensuring durability in temperatures ranging from -40℃ to 120℃

please note that the total outer dimensions of the grille measure 6" in diameter

10"w X 8"h [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 9.75"H] w40h40 + Product Details Size &+ Product Details Size 10"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" width X 7. 75" height. High Quality High quality steel with counter sunk screw holes (screws included) and no sharp edges. Equipped with a lever for easy airflow adjustment and dampening. Airflow Control Adjustable airflow lever allows precise control over the direction and volume of air. Installation