Carex disposable CPAP filters are an affordable aftermarket solution for your CPAP machine supplies * These ultra-fine filters are compatible with the following Philips Respironics machines: System One 60 Series and SleepEasy * It is recommended to replace your disposable filters at least once every two weeks to keep your CPAP air clean and your breathing easy * Purchase Carex CPAP filters today to stock up on all your CPAP supply needs * Contains 6 ultra-fine disposable filters * Our disposable CPAP filters help filter out any unwanted contaminants to keep your CPAP safe clean and working effectively *