These Standard Air Filters are made of Polyester fibers to help block particles in the air from reaching your concentrator's intake ports. They are compatible with all ResMed Mobi Portable Oxygen Concentrators.
Usage Information: Mobi filters are disposable and should be replaced every 12 months or sooner if there are any holes or blockages in Mobi's air intake caused by dirt or dust. The Mobi oxygen concentrator should not be used without a filter in place. For complete instructions review the documentation that came with your equipment.
Installation Information: A Torx T8 style screwdriver is required to remove and attach the filter cover on Mobi Concentrators.