Heavy Duty Inline Extractor Fans. They are designed to operate in larger than standard ventilation ducts.And used engines bearings significantly extend the service life of the product. The item "Inline Industrial Extractor Fan 210mm / 260mm / 325mm Commercial Duct Ventilator" is in sale since Monday, November 10, 2014. This item is in the category "Home, Furniture & DIY\Heating, Cooling & Air\Air Quality & Fans\Extractor Fans". The seller is "prostkoltd" and is located in Leeds. This item can be shipped worldwide.