Ohh ok Im pretty sure I know whats going on now. So its almost like the flexwatt is going to zig-zag throughout the rack? And thats why when your ordering flexwatt, the store asks you to put how many feet youll need, so it can continue throughout your entire rack?

So basically if I had a 4 shelf rack, and each shelf is 3ft long, Id order approx. 12ft of flexwatt, and order only one clip/wiring set to hook to the thermostat?

Ha sorry for my ignorance with this topic, Im new to the whole rack thing.
Thanks