triple glass tubes

Features

1) Structure: all glass coaxial dual-tubes, an inner tube inside the dual-glass outer tube

2) Material: high borosilicate glass 3.3

3) Thermal collecting efficiency up to 40%

4) Capabilities

(a) Fast thermal collecting efficiency (b) High heat resistance (c) Hight cold resistance

5) A single collector (below) can heat up to 120 gals

6) Most economical and efficient system for both small and large scale heating projects