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Most Central Oregon residents get their household water from wells. The quality of Central Oregon well water is excellent, but when drops of water dry on glass, they leave a spot. Those spots are caused by dissolved silica (sand). The water in Redmond, for example, has about 90 ppm of dissolved silica, a relatively small amount, but enough to leave visible spots.
Insulated glass (sometimes called “double-pane glass”) is the assembly of two separate panes (called “lites”) of glass over a spacer frame to form a hermetically sealed air space between the lites. The air space provides a far greater impediment to thermal transfer between the interior and exterior sides of the building wall, improving building comfort and reducing heating and cooling costs.
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