Most of us on the forums use and recommend screen cages for all of our chams, panther and veiled especially. I used them for my veilds. I simply wrapped three sides in a shower curtain to help retain moisture. Also, live plants will help retain humidity. If you have live plants and mist 4-5 times a day (depending on your RH) you should be fine. My humidity would get down to about 35% and jump to about 85% after misting. It would then slowly drop back down to 35% by the time the cage was misted again.