Cheap pm2.5 dust air exchange system for Korean homes

A very simple, yet effective way to build a cheap air filtration and exchange system for your home, in Korea. This filters out between 70 to 90 percent of the pm2.5 dust before it enters the house. My larger home air purifier easily takes care of the rest. Exchanging air is important, due to buildup of formaldehyde, which causes Sick Home Syndrome. Particle board furniture and cabinets, flooring, and wallpaper are fillled with VOC's and chemicals that will make you sick if you don't exhange the air in your home.
Fan Here, from Gmarket: Kumgang KV-150
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