NEVER, build an outdoor cage. there are many reasons for this.
1. if it's glass then it will get too hot and the beardie will by cooked.
2. if its wood, rain and humidity will seep in the cracks, then when winter comes it will freeze and then you have a big crack down the center.
3. and unless you live in the deserts of australia the beardie will probobly die of freezing, or exaustion
4. the beardie will become adventures and try to break free
so remember never, ever, ever, ever, ever, build a cage outside.
P.S. remember no matter what way i die even if there's a suicide note... it was murder