Fast Shipping On All Items 30 Days Money Guarantee Customer Support Excellent Service 100% Satisfaction Satisfaction Guaranteed AC Infinity CLOUDLINE PRO S4, Quiet 4? Inline Duct Fan with Speed Controller ? EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics Specification Item model number CLOUDLINE S4 Product Dimensions 11.9"L x 6.9"W x 7.4"H Cooling Method Air Noise Level 28 dB Wattage 21 watts Compatible Devices Transmission Coolers Item Weight 5.74 pounds Voltage 240 Volts (AC) Maximum Rotational Speed 27000 RPM Air Flow Capacity 205 Cubic Feet Per Minute Manufacturer AC Infinity Is Discontinued By Manufacturer No Brand AC Infinity Size 4-Inch PRO, Speed Controller 6.9 "h x 11.9 "h x 7.4 "h. Weight: 5.74 lb Item Description Designed to ventilate grow tents, transfer heating/cooling to rooms, circulate air, exhaust odors, and cool AV racks. Features a wired 10-speed fan controller; also compatible with all UIS controllers with intelligent programming. PWM-controlled EC motor provides quiet and energy-efficient performance with minimal heat and noise. Mixed flow design with stator blade and hydrodynamic wind circles enables airflow delivery in high resistance areas. Duct Size: 4? | Dimensions: 6.9 x 11.9 x 7.4 in. | Airflow: 205 CFM | Noise: 28 dBA | Bearings: Dual Ball Product Description CLOUDLINE PRO Series Intelligent Precision Ventilation Improve your air exchange while maintaining a quiet and energy-efficient performance. Exhaust odors and effectively strengthen airflow to support your ideal environment. Easy Environmental Automation Innovative Ventilation Connect this duct fan to CONTROLLER 69 or later (sold separately) and download the AC Infinity app to access custom activation using climate triggers, grow cycles, scheduling, and automation programming. Advance Programming Create automation for your devices to systematically manage your grow tent environment. Set customizable alerts that can trigger to almost any event. Greater Environmental Insight Interactive graph intuitively displays temperature, humidity, and VPD data. Input target figures to help your grow tent approach and maintain your ideal environment. Active Monitoring Stay on top of what's happening in your grow space using alerts and notifications so you can quickly counteract any environmental spikes. Find the best fit for your grow tent. Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.7 out of 5 stars 3,952 4.8 out of 5 stars 5,089 4.7 out of 5 stars 1,073 4.7 out of 5 stars 157 4.6 out of 5 stars 150 Price $89.99$89.99 $109.00$109.00 $169.00$169.00 $269.00$269.00 $369.00$369.00 Model AI-CLS4 AI-CLS6 AI-CLS8 AI-CLS10 AI-CLS12 Duct Opening Size 4" 6" 8" 10" 12" Airflow 205 CFM 402 CFM 807 CFM 1201 CFM 1604 CFM Noise 28 dBA 32 dBA 39 dBA 48 dBA 62 dBA Power Usage 21 W 38 W 78 W 136 W 139 W Smart Programming Precise 10-Level Fan Speeds Precise 10-Level Fan Speeds Precise 10-Level Fan Speeds Precise 10-Level Fan Speeds Precise 10-Level Fan Speeds EC Motor with PWM-control ? ? ? ? ? Mixed Flow Design ? ? ? ? ? Mounting Hardware ? ? ? ? ? Application HVAC and Growing Applications HVAC and Growing Applications HVAC and Growing Applications HVAC and Growing Applications HVAC and Growing Applications Return Policy ? We guarantee against any defective or misrepresented products. The original shipping label must be sent back to us to validate the return. A full refund can only be issued during the first 30 days upon receipt of the product. ? Returns will be voided if the product is mishandled or physical damaged by customer. ? Buyer will be responsible for all kind of return shipping/shipment to the seller for resolving the problem. ? Returns made for all non-defective, undamaged products are subject to a 15% restocking fee. Shipping and handling fees are absolutely non-refundable. If an item is returned to us due to an address issue, we do charge a reshipping fee to reship. If you would like a refund, there will be a 15% restocking fee applied. ? All returned products need to be assigned an RMA # (Return Merchandise Authorization #) prior to return. Please contact us through's messaging system to obtain an RMA# for the return. Any returned product without an RMA # on package will not be accepted or processed. ? Please contact us before returning. Feedback ? We appreciate your feedback and our system will automatically leave feedback for you after bid ends. ? Please contact us through message center if you have any problems, we will always try our best for 100% customer satisfaction. Payment Options Shop With Confidence