Suppose you have a Cisco VG224 (Voice Gateway) located at a cruiseship-dock. Suppose the fans get corroded by the salt over time, and there’s no airco, so the thing stops working because of the heat. Ofcourse you don’t have any spare parts, and ordering fans will take some weeks due to customs+shipping.

This was our (temporary) solution, as there’s a ship arriving somewhere today .. ;)