metal framework elements for building or construction; door components of metal, in particular, door panels, door frames, door handles, door knobs, and sliding door rollers and pulleys; metal casings for doors; suspending runners of metal for hanging doors; guide rails of metal for automatic doors; metal beams for supporting autodoor drive mechanisms structural parts, in particular, door suspending runners, drive motors, central processing units (CPU), drive pulleys and driven pulleys; metal ...