Cabinet cooling fan, Fandis type FRF15KR230B, used in Berson ultraviolet disinfection control enclosures and referenced against BE-110. The fan holds the cabinet below the temperature at which ballast and control electronics age quickly, so it is treated as a preventive replacement rather than a run-to-failure item. Both the Fandis type number and the BE-110 reference are given so the part can be matched from either marking. Reference number FRF15KR230B, BE-110.