I had this Skid House custom made by a professional aluminum welder. It is set up to have a ventless heater in it and has a rack in the back for a 20 gallon propane tank but I have never needed to use it. I heat it with a buddy heater and it works just fine in sub zero temps. Let me know what other pictures you would like to see by email. (eyeshaveit49@gmail,com) I live near Holland Michigan.