MOUNTING OF THE SUB-FRAME
The sub-frame, in 3 minutes is assembled and installed.
Before beginning to install a door frame, its necessary to verify the floor level.
In correspondence to the floor level, fix the metal support (PF 2) to your wall, over which the door frame will be laid
Subsequently, continue to install the false frame by attaching it on to the first system ZR 80 on top, then proceed by
attaching the false frame to the other ZR 80 underneath in a perpendicular fashion.
Repeat this operation on the opposite side of the false frame.