This was an experimental cage I built with some closet shelving and the wire to to a large bunny cage I had. I used C&C grids to support the cage top & the shelving as the base on all 4 sides. The ramp is also bent C&C grid with door mat zipped on and is intended to lay on top of a tunnel to reduce the incline. I used a small dog run wire from the dollar tree to attach the lid and would have used more c&c grids to completely enclose it, but I dismantled it to create a larger enclosure.