10"w X 8"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 9.75"H] 3-Way or 4-Way ensuring compatibility with most thermostat

ensuring compatibility with most thermostat models

actual front end outer dimensions are 9

height: 20px

Actual Filter Size – 23 3/4"w x 31 3/4" x 1"

Actual Filter Size – 33 3/4"w x 15 3/4" x 1"

10"w X 8"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 9.75"H] 3-Way or 4-Way ensuring compatibility with most thermostat+ Product Details Size 10"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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