10"w X 6"h [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] 3-Way or 4-Way For 12" Round Duct Opening

For 12" Round Duct Opening - Spiral or Flex

providing efficient performance of up to 300m3/h

actual front end outer dimensions are approximately 20 5/8" width X 18 5/8" height

actual front end outer dimensions are approximately 5

10"w X 6"h [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] 3-Way or 4-Way For 12" Round Duct Opening+ 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