Six basic fan types have been developed to provide universal ventilation for individual card frames, enclosures and housings. The fans can displace 180 to 270 cfm, depending upon model chosen, with the rack-mount versions capable of being directly inserted into any 19" enclosure, while the Vario rack mounted versions use a guide frame to fit into almost any enclosure width. The fan assemblies are available for operation from 115 or 230 vac or 24 vdc. Rotor shaft positions of 3.33" or 4.13" from the front can direct ventilation as needed. Fans bear the CE mark.