Datawind Filterfan is useful for space restricted installations or enclosures pre-built without cooling in mind, specifically for IT racks with rails that get in the way of a traditional filterfan. The filterfan's external mounting system enables more storage racks to fit into the cabinet while providing the mission-critical cooling function. The product includes a LED indicator light to warn personnel when the temperature exceeds the desired temperature inside the cabinet, or of a fan malfunction or clogged filter.