Feature 13layer filtration to assure clean oxygen. The first layer, filter impurities and large particles of dust in the air. The second layer, filtering tiny dust particles in the air. The third layer, filtering gas odor in the air. 2Filter core paper, using 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 multiple brands and model, easy to use, bring you convenience.SpecificationCondition: 100% Brand NewItem Type: Oxygen Generator FilterFitment: Fit for Philips 3LFit for OmronFit for O2BOXFit for Haier Fit for Skyworth, etc.Applicable Model: K3B, K3B-PHSize: Approx. 11.3 x 5.2cm / 4.4 x 2in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Oxygen Generator Filter