Respironics Pre-Legacy BIPAP Ultrafine White Intake Filter 6-Pak

4.75" x 2.25" disposable fine-particulate filter. Depending on the quality of the air around your CPAP or BIPAP machine, these filters should be changed out about every 4-6 weeks.

Philips REF# 622219

These filters are not washable.

These filters are not compatible with the Respironics Legacy, M Series, System One, or Dreamstation models. Please see image for specific BIPAP machine compatibility - Pre-legacy BIPAP Pro with BIFLEX, Duet, Synchrony, etc.