Phresh Hyper Fan V2 The quietest, smoothest, and most efficient Hydroponic Environment Control Fan on the market, with the maximum CFM per watt of any fan in the industry! Hyper Fans generate higher static pressures and air flows than any other mixed flow fan on the market. They provide your garden with a comprehensive environmental solution. Each fan comes with a removable, completely adjustable speed control. Hyper Fan V2 Phresh The Phresh Hyperfan V2 incorporates the most advanced technology available in mixed flow fans. To fully optimise the aerodynamic movement of air across the fan blade, Hyper Fans use aircraft "taper blade technology." Remove The Warm, Muggy Air From Your tent, Silently and Efficiently!! The Hyperfan V2TM has the highest static pressures of any fan type in the industry (up to 680 Pa) and is now equipped with brand new unique 0-10 V, 9 pole EC exclusive motors. The substantially upgraded 0-10 V motors allow smooth speed control from zero to full power without droning or motor degradation. Features New digital EC "brush-less" 9-pole motors EC digital brushless motors are quieter, run at lower temperatures, are more energy efficient, and are more reliable. Fan efficiency is higher at 7.85 CFM per watt. Outputs more linear air flow than other fans. Taper Blade & Stator Technology/High Pressure Laminar Air Flow Each fan comes with a detachable completely changeable speed controller. Steel construction and Abec 7 ball bearings Compatible with 0-10V controllers via RJ9 or RJ11 wire Specifications Model 125mm 150mm 200mm 250mm 300mm 315mm Diameter (mm / Inches) 125 / 5 150 / 6 200 / 8 250 / 10 300 / 12 315 / 12.5 Max Flow (m3/hr) 350 560 1230 1840 3100 3100 Max Flow (L/s) 100 156 342 512 862 862 Max Flow (CFM) TBA 330 725 1084 1827 1827 Pressure (Pa) 475 545 560 610 730 730 Noise (dBA) TBA 66 69 72 74 74 Voltage (Volts AC) 240 240 240 240 240 240 Max Power Usage (Watts) 27 42 90 180 320 320 Suggested Grow Area (m) TBA 2 x 2 x 2 2 x 4 x 2 4 x 4 x 2 Max Room Size (Watts) 1000 1500 3000 5000 10000 10000 Length (mm) TBA 140 170 205 255 255 Width - Including Bracket (mm) TBA 204 248 314 364 364 Weight (kg) 1.6 1.9 2.8 4.8 6.5 6.5