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To: J.B.C. who wrote (2753)	2/24/2008 6:37:28 PM
From: epicure	Read Replies (1) \| Respond to of 17069

Is this like "Low E glass? Low-E coatings are designed to be an improvement in the heat retention capability of double pane glass during the heating season. They do very little to control solar heat gain or UV light. comfortvision.com I don't think it's all that attenuated unless you have special coatings. alpeninc.com "Performance Comparison Ordinary clear window glass lets in up to 70% of the sun's UV rays. New varieties of high-performance window glass, commonly called "low-e" glazings, provide protection from UV radiation, as shown in Figure 4. Even the best of these, however, still transmits 11% - 26% of the damaging UV radiation. (Results shown are from independent testing done by Schott Glass Technologies in Duryea, Pennsylvania on glass from actual windows purchased in May, 1989. A test report summarizing these results is available from Southwall Technologies on request) Since UV radiation is invisible to the eye, and is the major cause of fading for most fabrics, it should ideally be eliminated. Heat Mirror with XUV transmits less than one half of 1% of UV radiation -50 times less than competitive "Low-e" window products and more than 100 times less than ordinary double-pane glass -while maintaining a clear, colorless appearance"