Zen Spirit - «The Natural» OTTO makes wind!When heat builds up indoors in summer, the slightest breath of wind is welcome: OTTO helps with a gentle breeze or generates a gale! Thanks to the adjustable industrial fan, the air circulation can easily be varied. OTTO is a straightforward chap with height adjustable feet. OTTO is in tune with nature! The frame is made of formed wood and oiled twice. This ventilator is characterized by a very sober design. It will find naturally its place on the floor, near a house plant. Its big dimension (37 cm) enables powerful ventilation. It was designed by Carlo Borer (Swiss Designer) for Stadler Form. OTTO is also very quiet: only 34.7 dB on speed 1, and 48.2 dB on maximum speed. In the 2014 edition, the fan can be opened to be cleaned.