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.
USAGE: 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. For complete instructions review the documentation that came with your equipment.
NOTE: The white filter material is permanently attached to the blue plastic filter housing. They are not designed to be detached from one another.
Excellent I use this product every night they were so affordable I but several of them so I always had a clean dry one while the other is being dried
The item is exactly as described and fits perfectly in my machine.