With a very low construction height of just 5 cm, the KT FLEX Direct drive system is specifically suitable for overhead installation. That also makes it possible to retrofit revolving doors that barely affect the difference in temperature between inside and outdoor areas. The drive offers a very high degree of positioning accuracy. When connected to the revolving door, this means the system achieves an idle state that is very advantageous for climate separation. The door runs and opens and shuts quietly during daily use.