1 The door guide rail not only ensures the door clearance, but also lets the door panels move lightly and smoothly

2 Doesn’t occupy the space outside of the shaft

3 The pit depth and the headroom height is small, save the build space maximumly

4 Total sealed car door (the type is same as landing door)

5 The door system has been assembled and installed as a whole to leave company, improves the installation technics