Topfond new fan Shandong Office Manager He 15,201,530,547 18,953,856,917 equipment air volume: 400-1000m3 / H; Installation:? Window installation Window new fans, is the ideal equipment to purify fresh air into the room air-tightness. The aircraft in the window or hole in the wall blank installed inside, with a small low noise centrifugal fan and air filter inside the machine, the outdoor air is sucked from the rear fuselage blinds, after purification blown into the room. After this new fan is installed correctly, can add to the clean, fresh air indoors, promote indoor air circulation; and make room to maintain a positive pressure, maintain clean and healthy indoor air; at the same time, can effectively filter out harmful bacteria, prevent airborne disease . Optional parts: electric closed valve; electric heater; wall controller / timing controller / network smart new wind controller; filter clogging alarm; Features:??? Selected high-quality fan, low noise, air pressure? Large, durable;? coarse efficiency, in effect two filters, clean room to meet the requirements;? two tranches of wind speed selection;? ergonomically optimized structure design, replace the filter only demolish four screws, takes less than one minute; ? three-wire power cord with grounded electrical safety regulatory requirements in line with the room; rain and insect fresh air inlet design, the use of worry; full set of mounting accessories, installation easier; Product parameters:?? Model X-04C X-07C X- 10C air volume m3 / h 400 700 1000 noise dB (A) 48 51 51 electrical parameters 220-50-1 power (W) 50 70 150 filtration efficiency (%) 85% white color computer installation Weight (kg) 16 24 32 packaging Weight (kg) 20 30 40 Note: The particle diameter of not less than 1.0um aerosol filtration efficiency of dust particles;