I had an old 4X8 utility trailer that I never used so I turned it into a flat bed to load my Snapper mower on, the trailer was to narrow for the mower with it's grass chute on, so I added 18 inches to its width and and turned it into a flatbed. I put new wheels, tires, and wheel bearing and hub kits on it, and built a new a tongue with a place for a Box also. The trailers wiring fits into the slotted 2X4 treated lumber bolted to the sides of the trailer.