In my opinion, I don't think the freedom breeder rack is a good choice for any cold room. They are too open. They are more of a frame system with boxes hanging in the open air by their edges in the metal guides. Also, metal absorbs the cold. Put a piece of metal in that room overnight and see how cold to the touch it is the next morning. You would have to spend a lot of money heating that room to maintain the temps. The breeders that I know that use Freedom Breeder racks have them in spare bedrooms or a building that is finished just as nice as their house. Good insulation, good lighting, finished floor, etc. Just as warm and comfortable as any room in their house. I'm always recommending the racks from AP cages but any rack, wood or plastic with a small modification will probably work better than a metal frame with open air boxes. Just wrap the sides and back of each rack with rigid insulation, reflectix(sp), etc. I had to do this with my first plastic racks. Amazing just how much difference a lightweight piece of rigid insulation can make. When your boxes are surrounded on all but one side there's no way for cold air to get to them. The back and sides of the rack stay warm and prevent heat loss because they are now covered with rigid insulation. The shelf below the box has heat tape, cable, etc and the one above the box also has heat. The only open area is the front and as the air around the box heats up, it will move out the front which prevents cold air from getting in and around the boxes. If the basement has a concrete floor, you may want to consider placing your rack(s) on a wooden pedestal or base that is also insulated. This will prevent heat lost on the lowest shelf.