I have been looking at vertical fresh air enclosures. I will definitely order one today and get him to a vet ASAP. Thank you for the help. My husband and daughter bought him on a whim and I have been stuck doing the research on how to care for him properly ever since.
I thought his tree was too close to the lights so I took it out and put a shorter one in there but he climbed up and hung from the screen right under the light anyway!