Product Description Theory and usage: When the electronic motor works, pumping water wheel will guide water to acentric rotate wheel and form water curtain. Outside air penetrates the water curtain then through uv light's sterilization, will be filtrated and become fresh again. Anion generator will increase the density of anion. EP-208 is most suitable for room equipped with air-condition, office, entertainment place, family and hotel. You will feel living and working in nature with the help of the product. Design with low noise and environment friendly. Availability within 80square meters Carton measure: Power: 15w Voltage: DC12V 600mA Package quantity: 71.5*48.5*45.5cm 12pcs/CTN, 2160pcs/20' 4320pcs/40' Size: 217mm*221mm