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.

• Offers premium protection to your waterline
• Two inches of insulation with a total r-Factor of 14
• Prevents frost from traveling to your waterline
• TIP: Do not cut or modify Thermal Tube. This will expose the insulation to the elements and deplete the insulation properties.