This highly insulated tube shields incoming ground water from cold as it passes through the frost
           level.   Polyethylene construction ensures years of trouble-free use. 

           Outside diameter:  14"           Inside diameter: 10"

           Tube fits on top of 12" drainage tube or stack 30" sections on each other.  NOTE: Be sure your
           fountain is at least as wide as the tube.

           In most areas of the country a 30" tube and 3 ft. of plastic drainage tile is adequate for a heat well. 
           For northern locations two 30" tubes may be required for energy free or E-fount applications.

           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.

           *Picture shows cutaway revealing inner insulation. Actual units do not have cutaway section.