The UK’s leading premium acoustic box fan available in a full range of sizes and strengths. Tornado acoustic box fans are one of the quietest and most compact we’ve heard. It contains a high quality Torin Safin squirrel cage fan lined with acoustic foam. Housing it in a MDF box means it is cheaper than its metal counterpart and the MDF also acts to absorb some of the small amount of noise generated. This fan is also smaller than some of the box fans we have seen making it ideal to fit through confined spaces. Quiet and Powerful Quality Acoustic Fans made by Century Growsystems. This fans power will get you through the hottest weather without sounding like a plane taking off. Very quiet and very cool.