Foam Filters for Puritan Bennett Goodknight 420 Series, 1 PK
RESmart® Replacement CPAP Filter - 3 Pack
Filters for Invacare Polaris TR and Aeiomed Everest, 2PK
Replacement filters for the Aeiomed Everest CPAP machine (formerly the Aeiomed Aura) and the Invacare Polaris TR CPAP machine. These foam filters come 2 per packge.