Krachtig en meerlaags filter voor 3-voudige reiniging van lucht: filter voor grof stof, filter H13 en actieve koolfilterDo you know how peaceful a whisper is? Whispering makes a seem tension of approx. thirty dB(A). That is actually louder than our Aerostyle equipment at the bottom setting. And frequently you wouldn’t sit correct beside them.Os s