A more unique system where the fan is on the opposite side of the collector, using "negative" pressure, and the vacuum runs through the entire collector as well as the dust system. The waste does not pass through the fan. Many states like California, for example, may require or recommend the negative systems since it is safer.
Founded in 1977, NESTRO Lufttechnik GmbH is currently one of the large established manufacturers of products and systems for extraction and filter technology and for their downstream heating technology, for surface engineering and for sorting and disposal technology. About 180 employees develop and produce the equipment according to individual customer specifications at the three production sites in Germany, Poland and Hungary.