Detailed Product Description Model#HMA-300/RH5 Stages of air purification system1. Negative ion2. UV light, long lasting, ... at least 20000 hours3. Tio2 photo-catalytic filter4. True washable HEPA filter, 99.97% efficiency.5. Ozone generator: optional, if ... , walnut, white, oakStainless steel inner structureEasy maintenance, easy replacement for parts.Low noise level: 35 dBlow power consumption: 40 watt ...