When there are obstacles or other requirements on one side, the door only needs to be moved on one side to open the door
1)Install the upper load-bearing guide rail on concrete wall
2)The door can be moved to single side
3)At least two pieces are spliced together
4)Door panel material: Double-sided 04 Guanzhou board is filled with polystyrene flame-retardant foam or glass wool
5)Slivery aluminum alloy frame,thickness2.0mm
6)With a small door on the door
7)Without corner protectors
