The shelf installed relatively easy, but the piece of wood that's used to attached the shelf to the wall was not in good condition - there was a large/long chunk missing out of one of the lengthwise corners (it probably split along a grain). This compromised the integrity of the shelf for certain, because the same shelf in a similar length installed with an unflawed piece of wood was very sturdy, while this one was a little wobbly. Otherwise it served its purpose well enough, but to future buyers, be wary of quality control.