Is there anyone out there making these? I've searched everywhere with no luck.
I, too am looking for these exact things. Sterilite makes a 15qt latch box (#1884) that's quoted at 5/8in taller than a 28qt. I know the measurements on their website include lids and this one appears to have a "taller" lid than the #1655 28qt tub. I'm thinking this may work if I can find them...
Holy necro thread! FWIW I ended up buying a 28 qt rack with tubs and dividers from the OP a few weeks ago, looks like he purchased the C-Serpents dividers.