Arctic breeze 6-pack fan Spray water protected fans (IP 55). Silent long life fans, with real ball bearing and brush free motor. 12 V low voltage with adjustable transformer (3 - 12 V) for speed control. By this, the cooling power can be adjusted. High capacity fans, adjustable from 80,000 l/h (double unit at 12 V) to 240,000 l/h (6 fold unit at 12 V). Power...