Cooling 3 Air/Water Cooling 4 Filterfans 5 Heater, Thermostats, Hygrostats and Fans 6 Chiller 1 Side Mounted Cooling 2 Top Mounted Cooling 3 Air/Water Cooling 4 Filterfans 5 Heater, Thermostats, Hygrostats [...] Hygrostats and Fans 6 Chiller Why Pfannenberg? Filterfans Unique installation: patented "click and fit" mechanism without screws EMC variants: also "click and fit", without pre-machining the cut-out High protection