It took 2 days to install and it broke when I used it.  I kept going back to the seller's video that is supposed to demonstrate the installation, however, it auto-fast forwarded upong playing, it was less than a minute long and had no audio.  It didn't help at all.  I learned a much as possible from U-tube, however, at the end, the right side slider lost all the ballbearings (they fell out after installing it to the cabinet wall, to that was it.  The box part of the cabinet is very nice and I'll use it elsewhere, not as part of a slider shelf.