There are 4 major manufacturers of dust collector filters in the US, who make the majority of the filters sold in the US and many overseas. They are ISO-rated and highly regarded quality manufacturers and ACS represents them all.
Most Dust Collector companies don't make their own filters. While these companies are not in the business of making filters, they are in the business of profiting from them. We cut out the middlemen!
When you buy from ACS, there is a good chance the filter you purchase came from the same manufacturing line as the OEM cartridge. 99% of all ACS filters are made directly to the specifications of the OEM. In a few rare cases, for instance the Farr Gold Series, we are unable to manufacture the inner cone due to a current patent. If our replacement hasn't performed as well or better than the OEM in service, we don't offer a replacement.
Don't some Dust Collector Filters have patents? Yes, they do, but patents expire and don't always affect a filter's performance. Before we begin selling ANY filter, we make sure that we put our filters through the same rigorous long-term testing to ensure that our filter will perform the same or better than the OEM.
Simply put ... you get the same filter for less money. GUARANTEED, or your money back!