Nilfisk ALTO Aero 26-21 6.6-Gallon Wet/Dry Vacuum - HEPA (900142) Its 25-liter container capacity, 127 maximum CFM, and 84-inch maximum waterlift. German-engineered for highest-quality cleaning, reliability, and long-lasting operation. Flat-top design and electric autostart feature (for plugging small electronic tools into the vacuum) for convenience. Nilfisk's Push & Clean feature offers semi-automatic filter cartridge cleaning for maximum efficiency. Additional tools include: 11.5-foot hose, extension tube, suction brush, and tool holder kit.