Sky Pro Window Cleaning System by NuStar, Inc

The Sky Pro system is a completely self-contained, self-climbing washing system that washes high-rises from the top of the building without ground lines, hoses, or cables. Ultra pure water leaves windows free from chemical and mineral residue, saving you money and improving your building’s longevity. The system cleans 30,000 square feet per hour, 20 minutes equaling a day’s worth of hand cleaning.