10"w X 6"h [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] Compatible with Duct 8" + Product Details Size -

+ Product Details Size - 36"w X 8"h is the size for the duct opening measurement only

Don’t worry

Ideal for Walls & Ceilings: Designed for seamless installation in standard 14" X 10" duct openings

+ Product Details Size – 12" x 36" or 36" x 12" is the size for the duct opening measurement only

+ Product Details Size - 16"w X 32"h X 2"d (for duct opening measurement only)

10"w X 6"h [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] Compatible with Duct 8" + 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