Fast Shipping On All Items 30 Days Money Guarantee Customer Support Excellent Service 100% Satisfaction Satisfaction Guaranteed 4 Inch 190 CFM Inline Duct Ventilation Fan with Variable Speed Controller for Grow Tent Specification Item model number 1 Wattage 59 watts Style R4 4 Inch Power Source Electric Noise Level 30 dB Color 4" Fan Special Feature Lightweight Product Dimensions 8 x 8 x 11.4 inches Control Method App Number of Blades 10 Included Components Cord Blade Material Plastic Item Weight 4.67 pounds Blade Length 4 Inches Voltage 110 Volts Air Flow Capacity 190 Cubic Feet Per Minute Controller Type Button Control Material Plastic Electric fan design Blower Is Discontinued By Manufacturer No Brand VIVOSUN Manufacturer VIVOSUN 8.0 inches x 8.0 inches x 11.4 inches. Weight: 4.67 lb Item Description Energy-Efficient Ventilation: This powerful blower with a fan speed of 2300 RPM can create an air flow of 190 CFM; It combines the features and benefits of axial and centrifugal fan, effectively circulating air Low Noise Level: The durable fan blades revolve smoothly and powerfully, which helps collect airflow volume and cut noise output; A less than 30 dB noise level will not disturb your work Adjustable Speed: A stepless speed controller on the power cord enables the fan to run at different speeds; With this speed switch, you can adjust it to the desired airflow level Easy Installation: This duct fan is compact and lightweight so it can be installed in small areas; Comes with an installation bracket indicating the direction of the airflow; Removable duct ends with locking tabs Versatile Applications: Suitable for industrial, household and horticulture ventilation applications; It can quietly and efficiently moving large volumes of air throughout your ventilation system Product Description 1 Low Noise 2 Powerful Air Flow 3 Speed Controller Will this work with a speed controller? This fan alreadly has a stepless speed controller on the power cord enables the fan to run at different speeds. Which size tent work with this fan? For 4 Inch fan, we recommend the 48"x 24"x60"/36"x 36"x72" tents. More Choices Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.4 out of 5 stars 7,016 4.3 out of 5 stars 12,800 4.4 out of 5 stars 7,016 4.4 out of 5 stars 7,382 4.5 out of 5 stars 3,555 4.6 out of 5 stars 1,680 Price $59.99$59.99 $29.99$29.99 $99.99$99.99 $119.99$119.99 $119.99$119.99 $103.99$103.99 Size 4 Inch 4 Inch 4 Inch 4 Inch 4 Inch 4 Inch Material Plastic Plastic Plastic; Metal Metal Plastic; Metal Plastic; Metal Air Flow 190 CFM 195 CFM 190 CFM 203 CFM 190 CFM 190 CFM Fan Speed 2300 RPM 2500 RPM 2300 RPM 2500 RPM 2300 RPM 2300 RPM Noise Level 30 dB 30 dB 30 dB 49 dB 30 dB 30 dB Features Powerful Airflow; Low Noise Powerful Airflow; Low Noise Powerful Airflow; Low Noise Powerful Airflow; Good Filter Powerful Airflow; Low Noise Powerful Airflow; Low Noise 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