Mine does not support lights. It's sort of floppy-ish. I got it at a home depot or Lowe's. It sort of bends. I had to cut it into three pieces because none of the pieces were long enough. I just have a heating pad because it keeps the temp at 84 degrees. Sometimes i put them together. I put a 10 gallon hood in it and support it with the lip of the tank and some scrap peices I got left over. It's sort of confusing and hard to open but, it does the job.