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Better filtration for single-stage collectors

by Dave Munkittrick

The cartridge filter is the first significant improvement in single-stage dust collection in more than 30 years.

Cartridge filters offer better filtration, better airflow and easier cleaning than bag filters (Photo 1). They are available on new dust collectors or as a replacement for the old filter bag on your existing single-stage machine. The upgrade doesn’t come cheap (approx $200 for the 20-in. cartridge). What’s really amazing about these filters, however, is they pack five to six times the filter area into a cartridge that’s smaller than the bag it replaces!


Better Filtration


The filter material in cartridge filters is made of spun-bond polyester, capable of filtering dust particles down to 2 microns. Compare that to a typical woven fabric bag filter that struggles to capture dust at 30 microns.


A disposable plastic collection bag replaces the lower bag, because the lower bag no longer needs to do double duty as a collection sack and a filter.

Enhanced CFM


A single-cartridge filter offers much more filter area than a single-bag filter (Photo 2).


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