Recycled furniture cage project #4

[presspirate]

This is an old dresser that my wife donated to the cause. I ripped out all of the internal supports and cross members. Disassembled the majority of the drawers. My intention is to use parts of the drawer fronts to make doors. The floor is 3/16" Plywood. Trying to figure the best way to heat it with flexwatt, as I do not want to mount it inside of the cage. I have read that you do not want to sandwich it between anything, though I think the floor is thin enough for the heat to penetrate if I mount it underneath. I welcome any suggestions.