Wittur has developed a full range of modernization kits for components such as doors and drives but also for complete systems, which will be highlighted at Interlift. Moreover, a special counterweight frame with integrated safety gears, specially designed for a major modernization project in the USA, will be presented on the stand. Wittur WSG 09, the energy efficient “pancake” drive solution for machine room elevators and Wittur HI hydraulic pump with inverter complete the modernization solutions.