To block even the smallest of particles, the one-pack of Disposable White Fine Filters for Puritan Bennett 420G, 420S, 420SP, 420E CPAPs and 425 Bilevel is made of polypropelene and acrylic fibers.
Designed for the Puritan Bennett Puritan Bennett 420G, 420S, 420SP, 420E CPAPs and 425 Bilevel, the filter is disposable and should be changed every month.
What's Included: