<p><b>TOPHORT 4 inch 190 CFM Inline Duct Fan with Speed Controller</b></p> <p>Ideal for controlling hot and humid conditions in grow tents/rooms.</p> <p>This inline duct fan helps with ventilation issues. It is built durable, runs smooth and quiet. Durable plastic fan housing and blades for extremely low noise; Variable speed controller for easy fan speed adjustment.</p> <p><b>Features</b></p> <p>Balanced blades are ideal for boosting air supply and venting exhaust air.</p> <p>Motor features a permanently lubricated bearing that operates quietly and requires no maintenance.</p> <p>Solve air delivery problems without major system rework or expense.</p> <p>Can be installed in any location, such as greenhouses, tents, etc.</p> <p>Energy efficient & quiet operation</p> <p>Lightweight & super easy to install.</p> <p>Perfect for connecting with carbon filter to circulate purified air in grow tent / green house</p> <p>Fluted on both ends to receive ducting</p> <p><b>Features</b></p> <p>Diameter: 4 inch</p> <p>Power Supply: 110/120 V</p> <p>Power: 60 W</p> <p>Current: 0.26 A</p> <p>Speed: 2400 RPM</p> <p>Air Flow: 19 CFM</p> <p>Noise Level <31 dB</p> <p><b>Package Contant</b></p> <p>1 X 4 Inch Inline Duct Fan</p>