When I unpacked the shelves, I am filled with doubt: the material seems "weak", light. But after mounting, the stiffness is at the rendezvous. The stability of the construction is also there.
There is nothing to complain about these shelves that fill their roles perfectly. Installed in my garage, one of them supports without flinching, more than 400 kilos of material!
It is a really worthy of trust and materials that I recommend.