On the design of the plan is a well designed device, but it takes a little space. I was surprised by receiving the importance of cardboard. As against it is quite light and moves easily. The problem with this kind of device is: is it really effective? For the purity of the air we realizes with odors For mites, mold should be medical tests to see if this makes service allergic asthmatics ... and it is not us who can say that efficiency. The air quality changes from red to blue: good but we do not know what there is on the filter! The noise is acceptable and can be adjusted in a strong position when it is not there and the standby position to sleep undisturbed. Interesting but surely a device whose effectiveness must be demonstrated.
