Structure: The assembly is very easy, the rungs should be placed only in the pre-drilled holes of the side parts and then the two cross bars are attached to the back (everything pre-drilled clean cleats with screws -> discounts and reconstruction, for example, when moving possible! ). The rungs are again fixed on each side with a screw so they can not be twisted. I have not done.
Wall mounting: For mounting on the wall, there are left and right each 2 large pilot holes. These are shown in the pictures not, but as a work in my view Trendy and beautiful with angles. I have used M10 hex bolts.
Conclusion: I weigh about 75kg, using the wall for pull-ups and other fitness exercises. The part is absolutely stable. When the connection is performed in accordance with solid wall, then wobbles nothing. I am absolutely satisfied and would recommend the device only.