we had a member use pet screen for the sides, and aluminum for the top which is what i would recommend. aluminum is very hard to work with, and the plastic of pet screen is strong, and forgiving just more expensive. i wouldnt use fiberglass for a chameleon, but did for a snake a few days ago since they dont chew it or do anything with it. a low W house bulb wont set it a blaze, but others would have a good chance. My chameleon cage is full aluminum, and i like it, but would have preferred the pet screen for their feet