We're reorganizing our whole stockroom and I've convinced the boss to invest in proper stacking crates instead of the mismatched collection of cardboard boxes and secondhand containers we've been using for years. The plan is to load these closed crates onto standard wooden pallets so we can move whole stacks with the pallet jack instead of shifting individual boxes which eats up so much time during inventory counts. My question is pretty simple but I can't seem to find a clear answer just from product photos, once these crates are stacked on a flat pallet do they interlock with each other or have some kind of non slip base that keeps them from shifting when the pallet is being moved around? We had an incident last month where a poorly stacked pallet of cleaning supplies tipped during transport and the cleanup took half a day, so stability is genuinely my number one concern here. Found crateco during my search and their closed crates look solid but I need to understand the stacking mechanics before we order a whole pallet load of them. Also curious about the bottom surface, is it completely smooth or does it have feet or ridges that might catch on the pallet slats and make it harder to slide into position during loading?