These filters are reusable and should be cleaned after 2 weeks of use or sooner if they appear dirty. They should be replaced every 6 months or sooner if they appear damaged.
These Reusable Foam Pollen Filters are made of blended synthetic fibers in a blue carrier. They are original Philips Respironics branded filters compatible with all DreamStation CPAP & BiLevel machines. Foam Pollen Filters are required for use with all DreamStation CPAP & BiPAP machines. DreamStation machines should never be run without a foam pollen filter in place.