Notice: These values are for the center of glass only. They ought to only be employed to compare the outcome of different glazing sorts, not to match full window items. Frame decision can greatly affect performance. These values symbolize double glazing having a 1/2″ air hole. Putting in double-glazed windows https://howtoapplypermanentmakeup22110.snack-blog.com/36857736/the-ultimate-guide-to-secondary-glazing-windows