Permanently protect your vertical water supply line from freezing. Ritchie Thermal Tubes provide two inches of insulation all around with an r-Factor of 7 per inch, 12 inch outside diameter, 8 inch inside diameter. Designed with the help of testing conducted by Iowa State University to determine the ultimate size for maximum water line protection.
The Two Foot Extension allows you to combine thermal tube extensions and tops to the depth needed to reach 1 foot below your frost line.
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