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It was exactly this one: http://www.leroymerlin.es/fp/14171696/extractor-de-bano-celcia-120-standard?idCatPadre=592894&pathFamilaFicha=600108
Fan: 20 watts, ideal strength and suck power for this design (my first design used 15W, and was just enough but didn't vent all the fumes always)The more you close the lids the more sure you are the fumes are getting out. If you work with the lids totally open some fumes could scape and go to your room. But with a 20W fan this is not really a problem.Sometimes when you work with a really toxic spray (or your wife just hates the smell...) you just want to be extra carefull to not allow any smell out of the paint booth :)
Cheap cardboard paint boothView Instructable »