This might be a stupid question but here goes anyway. We are finalizing our outdoor enclosure ideas for our Russian. We are planning on an enclosed house that latches, that opens to a welded wire cage with additional access to an open area with taller plants and more room to roam for when he can be supervised. We are having to make use of a current planter bed because it's the sunniest area of the yard. Most boxes I've seen are insulated but nighttime temps in summer here (Central Texas) are generally in the 70s, so he shouldn't need an insulated box, unless I am missing something? He will come back inside during colder months.