The Kärcher AD4 Premium is an electrical construction vacuum that vacuums cleaner ash, animal hair, and building material. The ash dredger stores this dirt in a 17-liter tank. The construction vacuum cleaner works without a bag, so it's possible that some dust particles slip away from the reservoir. The flat filter prevents dust particles from sticking in the vacuum cleaner. The exhaust filter also holds other dust particles so that the air that blows out the construction vacuum cleaner is free of dust particles. The vacuum cleaner has a telescopic tube, so you'll always have a comfortable working height. In addition, the construction vacuum cleaner is equipped with a parking mode. Stow the vacuum cleaner stably when you're not using it. The rubber wheels ensure that you have the ash vacuum cleaner rolling smoothly through the house.