Barriere a bit light, but for the price ...

The barrier is made of a few light pieces of wood, so it moves once installed, even pressure. It does not require installation is not saying, but even choosing to mount pressure must be set plastic sliders on the wall or stairs, which remain when we remove the barrier. A pediatric nurse came to check the fence once installed and she found it a little too fine, perhaps not strong enough for a large child.
But considering the price, this is actually not such a bad deal, we will see the behavior in time.