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] Compatible with Duct 6" even without needing to remove

even without needing to remove the thermostat

Actual Filter Size – 19 3/4"w x 11 3/4" x 1"

Heavier gauge than needed

actual front end outer dimensions are approximately 16 5/8" width X 24 5/8" height

/* more vertical + left spacing */ } /* OPEN STATE */ #hvac-product-accordion

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] Compatible with Duct 6" even without needing to remove+ 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