thanks, i just found some at big apple herp. My search engine was down and I was just looking through pages and pages of nothing close to what I wanted. For those of you who use flexwatt heat tape, what diameter do you use? I noticed they have 3 in, 11in, and so on. I am also thinking that I need a thermostat to make sure it runs at the right temp, correct? I have been using lights, and I am switching to a rack and heat tape just wanted to make sure I had everything set up right. Thanks for all the help, guess it might help if I mentioned my rack is made of metal shelving units with particle board as the shelves. From what I have read it seems I need a barrier between the board and the heat tape, is that correct? I am also guessing that the tape should not get hot enough to burn the rubbermaid, if use with a thermostat...Ok i think I have everything covered now..