8" X 4" [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 9.75"H X 5.75"H] Round Damper Ring "Opposing" back blades

"Opposing" back blades

Actual Filter Size – 11 3/4"w x 13 3/4" x 1"

Actual Filter Size – 35 3/4"w x 31 3/4" x 1"

actual front end outer dimensions are approximately 28 5/8" width X 16 5/8" height

heat pump systems

8" X 4" [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 9.75"H X 5.75"H] Round Damper Ring "Opposing" back blades+ Product Details Size 8"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" width X 5. 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