This combo pack will be enough to last the whole year so you will not have to worry about running out of for your Airsense MachineCOMPATIBLE WITH: This CPAP are compatible with Airsense 10, Aircurve 10, Airstart and S9 SerieCPAP Filter Kit is disposable filter kit fitting CPAP Machines,Fit with Various MachinesEach filter measures 2 3/32inch x 1 3/8inch (53mmx 35mm)to fit your machine precisely.Suggest replace your filter two weeks. The change of the air filter can prolongs the quality of your machine.Colour: whiteMaterial: cottonPackage Contents:80 x CPAPOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.