Permanently protect your vertical water supply line from freezing. Thermal tubing provides 2 inches
           of insulation all around with an r-Factor of 7 per inch.

           Outside diameter:  12"           Inside diameter: 8"

           Tube fits inside a 12" drainage tile for application where a heat tube needs to be added to an
           existing location.  NOTE: Be sure your fountain is at least as wide as the tube.

           WARNING! - Do not cut the tube in half or modify in anyway.  Cutting and exposing the insulation
           of the thermal tube will void any insulation properties.