Moreover pretty good design, these shelves are still very fragile as a whole and assembly. When mounting the support tubes on both side portions that serve as feet and body to all I met some difficulties. Indeed, shelf supports tubes fit together force on the lateral uprights and one corner broke during the interlocking operation, thus making it unusable these shelves. Fortunately I tinker a bit and I was able to make a metal plate again to make solidarity the two arms of the angle of the broken amount and thus make these shelves to their function. I recommend to future buyers to put in place the tubes with great care ....!
