ITEM NAME:10Pcs/set BMC Air Filter For 630/660 CPAP/APAP/BPAP Machines Sleep Apnea Filter- Benefit of Changing the Air Filter: * The simple and consistent change of the CPAP air filter can have incredibly positive effects on the quality of sleep as well as the overall health of your lungs. * Not only is a clean air filter positive for your health, it also improves and prolongs the quality of your machine. * Protecting this investment will lead to additional years of efficient use of your CPAP machine, which can save your money in the long term through preventative measures. Description: Materia:Filter sponge Color:Black Size:8.3cmx4cmx1cm(3.27"x1.57"x0.39") Package include: 10Pcs/set CPAP air filter Note: Please allow slight 1-3cm(0.4-1.18") difference due to manual measurement and a little color variation for different display setting.The simple and consistent change of the CPAP air filter can have incredibly positive effects on the quality of sleep as well as the overall health of your lungs. 10Pcs/set CPAP air filter. Not only is a clean air filter positive for your health, it also improves and prolongs the quality of your machine.