Review on Fisher Paykel SleepStyle Filter Pack: Essential Replacement Filters for Optimal Sleep Quality by Brad Schaefer

According to my Fisher & Paykel 200 series CPAP machine, the correct part number for the small air filter on the back of the machine is 900HC240. ". A search on Revain for this part number led me to this page and I ordered this pack of 4 filters. I agree with some of the other reviewers who say the price is high for such a simple piece of filter material but it seems difficult, it's easy to find another source and also have some confidence that the filter is the right size and material, I really don't think it's that important to get the exact same filter media and of course there are other similar materials readily available that work just as well, maybe even larger sheets of material that can be cut into a bundle... those smaller sizes... If I figure out how to do that I'll include one Add note to this post and let you guys know what I found out Meanwhile it works great and doesn't cost too much and it's a really good idea to use the filters often enough to change to avoid dirty air entering the car and also to avoid clogging the filter that can restrict airflow and potentially damage the unit.