I have a small utility trailer that I used to use for hauling small things, but the enclosure has deteriorated and is not useable anymore. My wife bought the trailer when I was TDY (still in the military) and it is just that...a trailer frame, it had no box, rails, or flooring on it...I had to build the box out of 2 x 4s and plywood (and paint). I believe the box was about 6' long and around 3.5' wide. It works well, but it just doesn't last very long, and it's a pain in the boot to have to keep building them. Are there any companies that make boxes/enclosures for these trailers out of something that will last a while that you can just bolt onto the frame?