10"w X 6"h [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] Round Damper Ring Universal Fit – Measures 6-1/4"

Universal Fit – Measures 6-1/4" wide x 4-3/4" high x 3" deep

our damper is designed to perfectly align with your setup

+ Product Details Size – 20" x 36" or 36" x 20" is the size for the duct opening measurement only

Don’t worry

+ Product Details Size – 18" Corner Baseboard Grille - White - HVAC corner vent cover

10"w X 6"h [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] Round Damper Ring Universal Fit – Measures 6-1/4"+ 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