The 41 qt racks are thicker.
The cages are thin. Over time, they bowed from the wight of the RHPs and cracked at the bent seam. In shipping I had several get little chips at various areas.
Again, the cage and rack market is fairly competitive. There are a couple of new rack companies that are getting good reviews. AP, RBI, PMHerps, Barrs all make good products and communicate well. No reason to put up with poor customer service or slow communication in a market like that.