The Maxx Air 18 in. ventilation fan is ideal for use in mild climates during the morning or evening, efficiently pulling in fresh air through open windows and removing hot, stale air from your home through the attic exhaust vents for a cool and comfortable living environment. Unlike a standard whole house fan, our ducted fans feature a damper box that is sealed with R5 insulation to prevent heat transfer back into your home, and a 12 ft. duct for maximum ventilation potential and noise reduction. The fan head mounts to an attic rafter with the included hanging bracket for an easier, faster install than a traditional whole house fan. It's a cost-effective solution to improving your indoor air quality while relieving strain on your house's air conditioning equipment. Upgrade this quiet electric fan with a wireless hub (XXWREWIFIHUB) to control your fan via a local Wi-Fi connection on most smart devices.