Product review (2 stars): Shoddy manufacturing
It arrived today.  First thing you do is lay it on its side and install the caster.  One of the back holes is partially covered by a plate.  The bolt of the caster simply cannot fit in the hole due to being obstructed by this plate.  I got my air dremel out and ground the plate away until the full threads where exposed. I was finally able to get the caster in.  A second hole was full of foam and I had to dig that out before I could screw the caster all the way in.  For now I'm giving them 2 stars.  Someone without the right tools would of had to send it back