General description The Karcher NT 20/1 ME Classic is a robust and compact wet and dry vacuum cleaner from the NT Classic range. It features a 20-litre container and is designed for easy service, low operating and maintenance costs, and reliable filter technology. With a powerful 1500 Watt turbine, this vacuum cleaner efficiently handles all types of dirt, making it ideal for small quantities of liquids, coarse dirt, and dust.