premium meets or exceeds leading national brand.. Dimension 6.75 x 6.75 x 5.4". Suggest to replace filter every 6 months to optimize performance Easy to install. 3 packs included. True-HEPA captures up to 99.97% of particles, as small as 0.3 microns. Nispira premium True HEPA with Preliminary filter replacement matching with Ibuki air purifier model C102 Preliminary filter traps large particles such as hair, dust
