With the FF series fan filters, Fandis offers a mounting solution for the ventilation of enclosures used in industrial automation. These fan filters combine ease-of-use with the necessary safety requirements. A patent pending mounting tool less system with clips has been used. The filter system can be opened by a simple finger push. Via sliding catches the cover can be released from the base. Ribbing substitutes the seal between the base and the cover, facilitating water runoff to the outside and further structural enhancements reduce the risk of infiltration.