I have just completed designing and building some custom cages made out of 1/2" high-grade plywood. My design allows for them to be stacked ontop of each other... but there is a slight oversight.
There is room between the ceiling of the bottom cage and the bottom of the cage above, for a flourescent fixture, that will rest on hardware cloth in a hole cut in the ceiling. However, there is no room for a heat-emitting light bulb. In previous cages, I have just added a light bulb fixture to the underside of the cage, and placed a wire cage around it to avoid reptiles getting burnt. I would like to have a better option than that.
Someone in a repticon show mentioned a ceramic strip that can be attached to the ceiling of a cage, and will act similar to any other ceramic heating element. Does anyone know of what I am talking about, and where to get it? Or do you know another solution?

