Jaime, I just replied to your email about these racks.
All pieces are pre-cut from Lowes in the closet organizer section and cost about $175 total w/belly heat. Each rack holds 28/11qt or 14/28qt tubs or a mixture of both. I currently have my 400-450g BP's in the 11qt tubs and will be moving them to the 28qt tubs once the exceed 500g.
I assume they should be ok in the 28qt tubs till they reach 1000+g or so.