the one we have at work is a blast booth, you could drive a limo into it. The hose is made of maybe 5" diameter hose, you gotta hold it like a damn firefighter or else it'll fly right outta your hands
but this paint is really stuck on marks. I've done it before where all I had to use was stripper, but his, the stripper only took off maybe 80% of the paint, so the rest I'm putting more coats of stripper on, and going at it with a scratchy pad