actually Mark, I like their sweater box racks so much, I just sold all of my Snake Shack hatchling racks so I can purchase two of their 30 hole hatchling racks very soon. They look identical only smaller. The only thing I can say negatively so far is, the boxes do not come with air holes in them. I was under the impression that they would have them pre drilled. When I contacted Jeff, I was told that there is no need for the additional air holes because of the tiny gaps from the tops of the boxes to the shelves. Now I dont know what they breed over there but here in Mikes world, air flow is everything. It took a long time, but I burned evenly spaced air holes in each tub. I used a sodering iron. It still looks professional, and everything drys out quicker reducing the chances for fungus.
A friend of mine had the same racks and tried to talk me out of buying them. His complaint was that the tubs kept sticking and there always seemed to be mold developing on the tops of the shelves above each box. I can almost guarentee both of these problems were because he never drilled any other holes for better air flow. I plug all four of these into a RANCO thermometer and they keep those racks "ON THE MONEY" tempt wise.
They are in the process of develping a new sweater box rack because rubbermaid stopped producing 28 quart bins. When they make these available, I will probably switch over to them for my adult corns to live in. Best of luck!