We have a standard draw bar on our 16ft van. Hubby couldn't buy a Box to fit Webber in so he made one out of 3mm Alloy Chequreplate that opens from the end, when the bed is down. The box is hinged so it can tip up to get to spare wheel if required. The box is held down with a bolt that is removed with wind down stabilizer handle that comes with van
.
.