CLN Vac Dust Extractor H-Class Continuous CFT-55 5500WCFT 55 Series Is a smaller 3 phase dust extractor. Fitted with a world class quality turbine motor which provides up to 530m h of high suction rate to all sized concrete grinders, even over a 24 hour period of non stop operation. The CFT 55 uses a manual reversed air cleaning system to clean the filter, improving filter life and vacuum efficiency. The CYCLONE principle industrial grade turbine Equipped with large HEPA (PTFE coated TORY polyester)