Thermal Tube 1 Foot #18158 – Insulated Water Supply Line Protection with 2" Foam Insulation, R-Factor 14, Prevents Freezing, Designed for Maximum Frost Protection

The 1 Foot Thermal Tube Top (#18158) is engineered to provide lasting protection for your vertical water supply line against freezing. With two inches of insulation surrounding the tube and an impressive R-Factor of 7 per inch (total R-Factor 14), this tube is designed to maintain efficiency through even the harshest winter conditions. Measuring 12 inches in outside diameter and 8 inches inside diameter, it offers the ideal balance of insulation and fit. Developed with insights from testing conducted by Iowa State University, the Thermal Tube is specifically sized to deliver maximum frost protection and prevent cold penetration to your waterline. This unit is ideal for use in shallow frost zones on its own or can be paired with a 2-foot extension to match deeper frost lines, ensuring a customizable solution for any installation depth. To maintain its effectiveness, do not cut or modify the tube, as exposure of the insulation will compromise its protective properties. Whether used alone or combined, the Thermal Tube provides reliable, year-round protection to keep your waterlines safe and functioning.

• Premium Freeze Protection – Permanently protects your vertical water supply line from freezing, even in harsh winter conditions.
• High Insulation Value – Features two inches of insulation all around with an impressive total R-Factor of 14 for maximum efficiency.
• Engineered for Performance – Developed with the help of Iowa State University testing to determine optimal size for ultimate frost protection.
• Durable & Reliable Design – 12" outside diameter and 8" inside diameter create the ideal barrier to stop frost from reaching your waterline.
• Flexible Installation Options – Use the 1-foot thermal tube for shallow frost lines or combine with a 2-foot extension to accommodate deeper installations.