Features: 1Filter impurities in oxygen to assure oxygen quality, practical for use. 2The filter core paper is made of eco?friendly materials, the whole is made of high?density fireproof fiber filter paper, which is not flammable and has no pungent odor. 3An important accessory for oxygen generator, effectively extend the service life of the machine. 4Light weight and portable, easy to be installed on the machine. 5Fit for INVACARE oxygen generator, suitable for multiple models, easy for use. Condition: 100% Brand New Item Type: Oxygen Generator Filter Material: Plastic Fitment: Fit for INVACARE Oxygen Generator Applicable Models: for IRC5LXAW, IRC5LXAWQ, IRC5LXO2AW, IRC5LXO2AWQ, IRC9LXO2AW, IRC5PO2AW, IRC5PO2AWV Filter Type: Composite Filter Working Technology: For HEPA Technology How to Use: Open the back cover, remove the old filter, insert the new filter, and close the back cover. Size: Approx. 15.5 x 6.3 x 6cm / 6.1 x 2.5 x 2.4in Multi-Layer Filtration Purification: The first layer: filter impurities and large particles in the air. The second layer: filter tiny dust particles in the air. The third layer: filter the gas smell in the air. Package Included: 1 x Filter