Puritan Bennett Goodnight Foam CPAP Filter

Puritan Bennett Goodnight Foam CPAP Filter is a Reusable foam filter for all the Puritan Bennett Goodknight 420 Series CPAP machines, including the 420G, 420S, and 420E, and the Puritan Bennett Goodknight 425 and 425ST Bi-level machines. The Goodnight Foam pollen filters are an essential component for your CPAP therapy due to their ability to remove irritating dust, pollen, and tobacco smoke particles from your CPAP airflow.