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EERE » BTO » Building America » Solution Center Home » Image Gallery » Even with R-30 of insulation in the wall, its overall R-value is R-5 if it has single-pane windows; triple-pane windows bring that up to R-16

Even with R-30 of insulation in the wall, its overall R-value is R-5 if it has single-pane windows; triple-pane windows bring that up to R-16