Protect your DreamStation CPAP device and enjoy pristine air with the Spirit Medical Ultra Fine Filter. This ultra-fine filter material effectively captures 99.97% of particles down to 0.3 microns, including dust, pollen, pet dander, smoke, and bacteria. The disposable design ensures effortless maintenance, with recommended replacement every 14 days or sooner. By effectively filtering impurities, the Ultra Fine Filter helps maintain optimal performance, reduces clogs and malfunctions, and promotes a healthier sleep environment. Protect yourself from harmful contaminants and allergens for a restful and rejuvenating sleep knowing that you're breathing the purest air possible.