Reduces noise

Keep that Antminer running cooler for longer life of the components - protect your investment that is making you money!

A great setup would be to connect a standard dryer hose, Duct Stat Fan Thermostat and a duct fan duct fan. If you have more than one Antminer then you could purchase a Y-connector and tie several ducts together. 

 Use the existing screws in your Antminer to connect. 

This duct can be used on any standard 120MM Fan!