
A little pricey for my needs so I don't know why I bought it but it works very well. I use it for the air filter in my computer room. I don't like cleaning computers and regular air purifiers are expensive (and I've had 2 breaks). So I glued one of them to the box fan and it works like a charm. Since it operates 24 hours a day, unlike the intermittently switched on AC central unit, its service life is shortened. They seem to last about a month on average. Honestly, I need worse filters. Because the filter is so thin, the fan doesn't move as much air anymore. But I can see the difference when the sun lights up the room. No more floating dust balls.

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