Inogen One G5 Intake Particle Filters
The particle filters cover the air intake screen and filter out dust, pet hair, and other airborne contaminants. The filters are removable and should be washed and dried weekly to keep the concentrator working properly. The filters should be replaced when they become misshapen or the screen is damaged. Some Inogen One G5 users like to keep a spare filter or two so that one is always available, even during the weekly wash period. Filters are sold as a pair of two.