Got this on craigslist for $150 my bf thinks i got ripped its been outside awhile but its big for my little guy 6 1/2 long 2 1/2 wide i know ill need something larger in future. I just got it cleaned out and him in it think he willl like all the room. Dumb question came with top made of plywood and metal mesh can i set my heat lamps directly on top of the mesh?