I am looking for some clear guidance on constructing a 1 hour fire rated room in my basement. I am installing a solar array and battery storage system. The battery storage system says it should be installed in an area that has a 1 hour fire rating. I plan to build a simple 4' x 4' room in my basement to contain the unit. I am capable to frame out and install drywall, but I am sure there are a few specific details around meeting the 1 hour fire rating that I need to research in advance. My current plan is to use PT lumber for any boards touching the concrete floor or block wall. 5/8" X rated drywall for all the walls (inside and outside the room). I plan to use 2x4s to fur out the ceiling of the room so the drywall isn't in direct contact with the floor joist above. A single 32 or 36" fire rated door will be installed opposite the battery cabinet. Any good resources that don't get too technical (from a legal-ese wording) that anyone could point me to? I would like to take a good swing at building it correctly before the inspector comes out.