OBO Bettermann SLM50 Mounting Instructions page 16

Mounting vertical ladders up to a max storey height of 3 5 m
Note!
16 | EN
5. Run the first threaded rod through the lower U support and up to the
ceiling opening and screw on the M12 nut and M12 washer.
6. Run the threaded rod through the lower side of the upper U support
and screw tight from above using an M12 washer and M12 nut.
7. Lock from below with the previously screwed-on nut and washer.
8. Repeat steps 5–7 with the second threaded rod.
9. With the open sides facing each other, mount the head plates on the
threaded rods, using 1 M12 washer and 2 M12 nuts.
Fig 13: Mounting head plates on the floor
The head plates must be mounted vertically under the head plates under
the ceiling.
10. With the open sides facing each other, mount the head plates on the
floor, using 1 M12 truss-head bolt each on the U support.
Fig 14: Mounting ladder rails under the ceiling
OBO Bettermann