The screen top makes me think you are a beginner with iguanas. That's perfectly OK, I was a beginner when I started looking here for desperately needed advice.
Sorry I don't remember ,but if you don't know much about iguanas, read all of this long list of articles. This is the best peer-reviewed information available:
Pay special attention to heat, housing, and humidity.
It's all available in Iguanas For Dummies by Melissa Kaplan.