The small distribution board models of the AK Air range feature the integrated IP65 ventilation system, which Spelsberg has developed to prevent condensate. An AK Air can be installed indoors or in a protected exterior area. The DIN rails (top hat rails) can be removed without tools. There are elastic pipe in-leads at the top for uncomplicated cable insertion. The AK distribution boards can be flexibly adapted on the sides or the flange types can be combined with each other. The list of test marks includes VDE, DLG and UL-EU. The AK Air distribution boards are also used in ammoniacal stable air.