My husband worked hard making our truck cage for our F-350 flatbed. We needed containment for hay, feed and building supplies for the farm. Things can fly off a flatbed and this cage gives our truck more usability. I stained the pine with chestnut deck stain to keep water from rotting the wood. The entire 3 sides are removable if needed, but they are heavy. We road tested it delivering our recycling from last winter into town. Nothing flew out of the truck and the cage stayed put. It feels good to make something safe for the farm and roads.