Please note: This item is purchase to order. V2 Edition - Even More Powerful and Just as Quiet! Stealth Hyper Fans utilise extra casing and dampening foam to produce extremely low noise levels. The V2 editions improve on the originals by delivering even greater levels of static pressure, increased airflow and a higher degree of controllability (from 0% to 100%). V2s are also compatible with a larger selection of controllers, which now includes the EC Fan Speed Controller, EC1 and EC5. Make the switch to a digital fan and you won't look back. How the Hyper Fan Works Digital fans offer numerous benefits over traditional AC fans. Firstly, they’re much more efficient, meaning that they shift a greater volume of air for every watt of electricity consumed. Over time, you’ll save a fortune on your energy bills, and this money can be put to use in other areas of your grow room. Digital motors also generate incredible static pressure levels, so adding a carbon filter won’t affect air flow as much as it can with other fans. V2 Hyper Fans feature Abec 7 self-lubricating bearings, which makes them incredibly durable. For peace of mind, Hyper Fans come with a two-year guarantee, but you can reasonably expect them to last much longer. A tethered fan speed controller is included with this unit, which allows you to manage airflow levels straight out of the box. It's worth bearing in mind that it is not temperature sensitive - if you want to regulate fan speeds according to room conditions, then you'll need to buy a separate controller. Airflow Rates 6-Inch V2: 560 m3/hr8-Inch V2: 1230 m3/hr10-Inch V2: 1840 m3/hr12-Inch V2: 3100 m3/hr To see our full Duct Fans range, click here