They are said to have an exceptionally low pressure drop and high dust-storage capacity. The patented offset of the pleat packs allows full use of a pre-filter’s filtering area, assuring a lower pressure drop and longer useful life.
The filter pack is also very stable, so that the risk of particle or fibre shedding with turbulent flow patterns is virtually eliminated.
Developed by Freudenberg Nonwovens in Germany, these filters are available in Classes F6 to F9. Their microbiological safety has been confirmed by the Institute for Air Hygiene in Berlin.
