I generally prefer amp heads and have assembled quite a few Blackface, Silverface, and Custom heads over the years. The problem is that I have far more amps than cabinets which forces me to swap them out to play....annoying. I want to start stacking the heads (3 deep) above the 2 - 2x12 cabs, but in a safe way. My studio is located on the top floor of a 2.5 story vintage home and thanks to the railroad adding a second track about 100 yards away, there can be some shaking 1-2 times per week when they run coal cars to KC. Short of just building some shelving, is there anything out there pre-fab that works well? Maybe some sort of metal baking rack or something? I figured that I would anchor it to the wall with a small lip around each shelf to discourage sliding off, but if there is something out there already, I would like to go that route. I just don't like stacking amps on top of other amps, much prefer some seperation. To paint the proper picture, I am not describing the Blues Brothers apartment that shakes itself like an earthquake when the train passes, but it can shake enough from time to time to knock things off the wall.