you might try ordering it from Spruce. I put one on my wagon and use it a lot. Not just for flying around "billowing smoke" but for windage, visual avoidance, and just used it this week to scare cattle off my runway. I talked to the makers in Houston area and they were great to work with, not sure why they won't get back to you. But Spruce helped me get the 24 volt version ordered from them. I am using the 2.5 gallon version and it works great.