To block even the smallest of particles, the one-pack of Disposable White Fine Filters for Fisher & Paykel HC200 Series is made of polyester fibers.
Designed for the HC200 Series of CPAP Machines, the filter is disposable and should be changed every month. This filter is a perfect match for the HC200, HC201, HC210, HC211, HC220, and HC221 CPAP, APAP, and BiPAP Machines.
These do the job. The breathing is much better
Appears to perfectly fit and replace the older style filter for my older model cpap- Sleep style series 200
The filters I ordered were OEM and are a high quality filter.