HydroPower® Ultra professional window cleaning equipment is the easiest and most efficient system on the market. HydroPower® Ultra is the fastest, safest, and most efficient way to clean outdoor glass surfaces, leaving a spot-free finish.nLITE Carbon Composite Pole20 ft. pole recommended for working heights of up to 24.5 ft.Longest lasting pure water system with 30% more pure water output.Exceeds standard DI filter efficiency, performance, workflow and comfort thanks to these features: FloWater Technology; KeyLock Resin Bags; FastLock OpeningProduces commercial grade zero TDS (Total Dissolved Solids) purewater for site glass cleaning and other applications that utilize deionized water.KeyLockfeature assists with proper resin installationFloWater Technology isan innovative water distribution system that ensures more efficient water flow through the entire vessel, improving resin efficiency and increasing its lifetimeFastLock Opening for easy and quick opening and locking of the filter. Safe, self-locking mechanism features a pressure release valve