Product Review

Filter-Monster brand replacement filter is designed and engineered to fit Blueair models 501, 503, 505, 510, 550E, 555EB, 601, 603, and 650E. Filter-Monster replacement filters are designed with quality and performance in mind. Our filters are true HEPA, which captures up to 99.97% of particles as small as 0.3 microns from the air. Recommended to replace every 6 months for most efficient performance