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"The fight is never about grapes or lettuce. It is always about people." Cesar Chavez | |
:: Tuesday, December 07, 2004 ::
Understanding Energy-Efficient Windows by Paul Fisette, Fine Homebuilding
Windows lose heat in four ways. The rate at which a window loses heat through the combination of the four is called its U-value. It is the inverse of the R-value, so the lower the U-value, the greater the insulative value of the window.------------------------------------------- posted 7:44 AM :: reference link ::
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