It's all-metal, with copper waterways, completely fireproof, and engineered to endure extremes of weather. It's easy to install anywhere, and competitively priced. Each panel cleanly interlocks into the next giving the appearance of one continuous array, so there are no gaps or spaces between panels to trap unsightly dirt or debris. Nearby fires or sparks from chimneys will not burn through the panels. The fin extrusion is tongue and groove with a full hollow center for a 360 degree wrap around the copper tube.
Copper is inserted into the extrusion and then mechanically expanded.
This process has the benefit of completely encasing the tube, eliminating any bi-metal exposure to the ambient. A secondary benefit is that the contact between the water tube and absorber will be maintained for the life of the absorber. Tubing is electronically checked at the mill for any defects in the wall integrity. Any length of tubing that does not meet minimum specifications for quality is marked and is not used for panel assembly. This type of process results in a superior connection as well as better flow distribution through the panels.