I pay 100 bucks for a 10×10×15 tall, and they are not temperature control'd ...
My unit was a 10x30 and I paid about $160 a month. I would not say they are temperature safe as it was out side. They do have some smaller units that are inside of a building but I'm not sure if they are temperature controlled units. I did have my furniture (couch,family pictures, dressers, toold)in the unit for about 9 months and they weren't affected by weather or anything. I do recommend calling the property manager her name is Angela and she is wonderful to work with. She also had other special that doesn't show okbb the website. Good luck and I hope this answer some questions.
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