Nispira 3-in-1 premium True HEPA with activated carbon replacement filter compatible with MA air purifier 14 Compared to original part 14R Preliminary filter traps large particles such as hair, dust. True-HEPA captures up to 99.97% of particles, as small as 0.3 microns. Activated Carbon filter removes any unfavorable household odors from kitchen, wildfire smoke and any harmful VOCs 1 pack included. Suggest to replace filter every 6 months to optimize performance Easy to install. Dimension 7 x 7 x 6.6". Quality meets or exceeds leading national brand., Weight: 1.04058187664 Pounds, Manufacturer: Nispira