The pre-separators DCF 2900 c (Intellibag) and DCF 2900 L (Longopac) are ideally suited for collecting a large amount of dust combined with our smaller dust extractors, for example our models DC 1800, DC 2800 or DC 2900. The pre-separators main function is to relieve the filter of the suction source and the DCF 2900 models are equipped with a Longopac solution or Intellibag for dust-free bag changes, thus minimizing unnecessary and time-consuming downtime.