8" X 8" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 9.75"H X 9.75"H] 10" Round Duct Pipe For 10" Round Duct Opening

For 10" Round Duct Opening - Spiral or Flex

actual front end outer dimensions are approximately 20 5/8" width X 28 5/8" height

+ Product Details Size – 6" x 12" or 12" x 6" is the size for the duct opening measurement only

Actual Filter Size – 33 3/4"w x 11 3/4" x 1"

+ Product Details Size - 16"w X 30"h is the size for the duct opening measurement only

8" X 8" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 9.75"H X 9.75"H] 10" Round Duct Pipe For 10" Round Duct Opening+ Product Details Size 8"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" width X 9. 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 Location