I still have to fix this underbed storage because the bottom is just a piece of vinyl and aluminum.... I'm afraid to set even a cup in there after our shelves. I'm going to have a welder put a proper bottom on it. Oh when I get to the undercarriage I have to route my wires through some piping since they are all exposed and all over the place under there and we have to put sealant on because they left it raw plywood.