I have been using Dadant for several years now because I can pickup from a local facility (Paris, TX). I have been very satisfied with their wooden ware. I use the commercial grade and usually buy at the first price break point for boxes and frames. I have boxes that have been on the shelf unassembled for two years that have not warped. Same is true for frame parts. Out of several thousand frames I have one warped top bar and one that had some short grain. Everything else has been fully functional and the fit was fine.