6" X 6" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 7.75"H X 7.75"H] Aluminum Bar our damper is designed to

our damper is designed to perfectly align with your setup

Please check the measuring guide to ensure a proper fit

Tamper-Proof Security – Features a robust design to prevent unauthorized access and protect your thermostat settings

Designed for sidewall and ceiling installation with included screws

6" X 6" [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 7.75"H X 7.75"H] Aluminum Bar our damper is designed to+ Product Details Size 6"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 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 Location