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nVent Raychem® in pipe miser is a pipe freeze protection system that heats insulated pipes from the inside. Utilizing a heavy-duty heating cable, it provides energy efficient in-pipe heating for pipes between 14 ft and 240 ft (4.3 m and 73.2 m) in length. Includes a ground fault protected electronic controller, designed for insulated 1 in and 1-1/4 in polyethylene pipes.