I was happy to receive this cage but I was very disappointed with the machining and the lack of quality. To be honest I should have just returned it as it cost a lot more than the other cages listed. The problem was with the back cover, which is closed with two screws at the back. The hole in the lid and the screw did not line up with the body of the cage/housing. I ended up having to mill holes in the lid to get the correct alignment that would allow the cage/enclosure to close completely. I have attached photos showing the problem. It appears as if the light/lamp is turned off from the factory.