These filters are designed for an additional level of air purity for you S9 or Airsense CPAP and Bilevel machines.
Sold as a pack of 12. Replace as needed.
These are good filters and work very effectively. However, be prepared to change them more often.
I haven't received my order.
Hi Liz, Our apologies if you did not receive indication that your order was ready, sometimes the email gets sent to the Junk or Spam folder. It is ready and set aside for you at our 150 McPhillips Street location where we have curbside pickup. Thank you for letting us know! Medigas Manitoba
Better than the standard filters, just need to be replaced a little more often