4 Inch 240CFM Dryer Booster Fan - Auto On/Off with Adjustable Presssure Sensor Effectively Boosting Drying Efficiency and Reducing Lint Buildup, Easy Install & Energy Efficiency

Auto-Sync and Post-Purge - The dryer booster vent fan activates and deactivates automatically with your dryer by sensing airflow. It includes a post-purge function that operates for 35 minutes after the cycle finishes to completely clear lint and leftover moisture, keeping ducts clean and the system prepared for the next load. 240 CFM Long Duct Airflow - This automatic dryer booster exhaust fan provides strong performance with 240 CFM airflow, specifically designed for long or complex venting systems. Even with several bends or overly long ductwork, this dryer duct booster fan improves airflow and removes lint from the vent hose, ensuring your dryer runs efficiently.

Reduce Drying Time - Specifically engineered to cut down drying times by boosting the exhaust airflow of your dryer. If your home has a dryer duct that extends longer than 20 feet or contains multiple bends, you may encounter slow drying due to poor exhaust airflow. This fan enhances the airflow, allowing duct runs up to 100 feet in length. Adjustable Pressure Sensor Switch - The automatic pressure sensor switch comes with an adjustable air pressure threshold. This allows the fan to work with most brands of dryers available, removing the difficulty of matching, conserving time and effort.

Universal Fit and Secure Design - Fits standard 4-inch round dryer ducts. Operates with most electric clothes dryers (120V). Includes thermal overload protection, a fire-resistant thermoplastic housing, and corrosion-resistant parts for prolonged operation up to 10+ years