[naturegal592]

I use wire shelving for and lid and have a daycare and a dog that is always around the cage or on it. The lid is cut so it rests on the cage, the shelving I use also has a 1-2" lip on it that comes over the front of the cage. I attached all of the shelving with cable ties so it is hinged and I love it. The kids have tried to open it but I told them once and haven't had a problem since. I don't have any supports under the lid but my cage is a 2x3. If you cut the shelf in half so it opens in 2 spots you could always use metal clips like on a dog chain to lock them together and unlock them when you need to open one side. You might find that you don't need them though. Good luck.