Reusable Foam Filters for Puritan Bennett 420G, 420S, 420SP, 420E CPAPs and 425 Bilevel (1 Pack)

The Reusable Foam Filters for Puritan Bennett 420G, 420S, 420SP, 420E CPAPs and 425 Bilevel (1 Pack) is a single reusable foam filter for the following machines by Puritan Bennett:

• GoodKnight 420G
• GoodKnight 420S
• GoodKnight 420SP
• GoodKnight 420E
• GoodKnight 425 Bi-Level
• GoodKnight 425 ST Bi-Level

Image of compatible 420 Series Machines by Puritan Bennett:

Filter Materials: Polyurethane

Tips for inserting filters:

• If you are using the disposable white filters, insert it into the filter area first, mesh-side facing in, towards the device.
• Insert the gray foam filter into the filter area, on top of the fine filter.