For air maintenance in renovation and reconstruction in black areas. To protect the user, the airborne fine particles are filtered using coarse, fine, M/H filters as well as activated carbon filters dust are extracted directly at the place of origin. By installing mobile plastic walls and locks, a vacuum can be achieved, thus avoiding dusts spreading outside the working area Volume flow monitoring and adjustable volume flow setting via rotary switches. Thus the required vacuum can be freely adjusted and adapted to the working environment Brushless motor with higher efficiency and longer durability Low operating noise, with night function Compact design, lightest device in its class with 125 Ã mm exhaust system High air flowThis text is machine translated.