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 and home improvement remodeling specialists

and home improvement remodeling specialists in completing their masterpieces

+ 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"

this access door ensures a secure fit

Ideal for Walls & Ceilings: Designed for seamless installation in standard 6" X 4" duct openings

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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 and home improvement remodeling specialists+ 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