Quiet 4? Inline Duct Fan with Temperature Humidity VPD Controller, WiFi Integrated App Control - Ventilation Exhaust Fan for Heating Cooling, Grow Tents, Hydroponics Features Designed to ventilate hydroponic grow rooms, transfer heating/cooling, cool AV closets, and exhaust odors. Dynamic temperature and humidity programming, with timers, grow cycles, scheduling, minimum speed. Remotely connect to our WiFi app to access advance programs, view climate data, and set automation. Mixed flow design combined with a PWM-controlled EC-motor for a truly quiet and energy efficient performance. Duct Size: 4 | Dimensions: 6.9 x 11.9 x 7.4 in. | Airflow: 205 CFM | Noise: 28 dBA | Bearings: Dual Ball Details Product Dimensions: 7.401574803 x 6.901574803 x 11.901574803 inches Item Weight: 6.3 pounds Shipping Weight: 6.3 pounds Manufacturer: AC Infinity Item color: Black Item model number: AI-CLT4 Item MPN: AI-CLT4 Item part number: AI-CLT4 Fast and Free Shipping You're already purchasing the item. Why pay additional for shipping, especially slow shipping? We get your order shipped out within 1-business day and delivered to your doorstep as quickly as possible. Competitive Pricing With our dynamic pricing model, our prices are always competitive. Our prices are some of the lowest that you will find on the internet. Rest assured that you're getting a good deal when purchasing with us. 30-day Money Back Guarantee We are committed to making sure that you leave this transaction satisfied. If you're unhappy with the product for any reason, you may return it back for your money-back or a replacement within 30 days. No questions asked!