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by olva22
3831 days ago
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I built a very similar thing in the US. I don't know where these fans or hepa filters are sold, but I buy a standard 20" boxfan at walmart ($16ish USD), and a 3M Filtrete AC filter in 20x20x1" size (also ~$15USD). These come in different ratings, so I buy the "allergen reducer" rating or higher. Duct tape to the back of the box fan, done. |
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Filter like this: http://www.walmart.com/ip/Filtrete-Advanced-Allergen-Reducti...
They even have a filter embedded with carbon if you're a smoker.