View the latest Window Energy Rating Scheme (WERS) results for a range of
G.James window and door products
G.James WERS Guide  158Kb
048 Series Awning Window - Single & Double Glazed 48Kb
075 Series Fixed Window - Double Glazed 43Kb
075 Series Sliding Window - Double Glazed 186
130 Series Fixed Window - Single Glazed 186Kb
131 Series Fixed Window - Single Glazed 44Kb
131 Series Sliding Window - Single & Double Glazed 54Kb
136 Series Double Hung Window - Single Glazed 47Kb
138 Series Double Hung Window - Single & Double Glazed 50Kb
165 Series Sliding Window - Single Glazed 44Kb
245 Series Sliding Door - Single & Double Glazed 56Kb
265 Series Awning Window (660 Sash) - Single Glazed 45Kb
265 Series Fixed Window - Single Glazed 45Kb
425 Series Fixed Window - Single Glazed 45Kb
445 Series Sliding Door - Single & Double Glazed 57Kb
450 Series Awning Window (660 Sash) - Single Glazed 45Kb
450 Series Fixed Window - Single Glazed 44Kb
451 Series Fixed Window - Double Glazed 49Kb
470 Series Hinged Door - Single Glazed 42Kb
472 Series Hinged Door - Single & Double Glazed 48Kb
475 Series Hinged Door (445 Sash) - Single Glazed 45Kb
475 Series Awning Window - Single Glazed 45Kb
475 Series Fixed Window (25mm Frame) - Single Glazed 45Kb
475 Series Fixed Window - Single Glazed 49Kb
475 Series Hinged Door - Single Glazed 45Kb
475 Series Sliding Window - Single Glazed 45Kb
477 Series Bi-fold Door - Single & Double Glazed 47Kb
650 Series Fixed Window - Single Glazed 45Kb
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