This 4' Thermal Tube is thick walled & foam filled poly construction for maximum protection from the frozen ground above the frost line. Center your water line in these thermal tubes or combination of thermal tubes to reach the desired depth for your area. You don't have to worry about the ice cold earth temperatures infiltrating into and freezing up your water supply line. Additional protection is also available on our website in the form of foam pipe insulation kits, and self regulating cable heaters.
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