11" Wide x 2 Feet Long Flex Watt Heat Tape - Self-Regulating Pipe Heating Cable for Freeze Protection - Perfect for Water Pipes, Roofs & Gutters in Winter

I used these for 5 gallon plastic buckets to ferment wine. They work fine. Even after you buy the leads and put them on they are cheaper than the store. My ad vice is DONT buy the leads with the clips you compress on, they are a real pain and dont make good connections. I soldered mine on and have not had a problem since.