Honeywell, hepaclean® tabletop air purifier, hepaclean® filter captures up to 99% of fine airborne particles such as dust, pollen, smoke & pet dander1, manual control 3 air cleaning levels, electronic filter change reminder, dual action hepa-type filter includes activated carbon pre-filter layer to help reduce odors, aham cadr: 55 / room size: 8.5'x10' (85 sq.ft.), replace hepa-type filter every 4 months. For Replacement Filter Use TV# 227771.