Krachtig en meerlaags filter voor 3-voudige reiniging van lucht: filter voor grof stof, filter H13 en actieve koolfilterDo you know the way peaceful a whisper is? Whispering makes a audio strain of approx. 30 dB(A). That is actually louder than our Aerostyle equipment at the bottom placing. And usually you wouldn’t sit proper close to them.Anti-t