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U Values

The following table gives indicative U-Values for the unit constructions shown:

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Values are based on standard 4 mm clear and our current hardcoat Low E glass, Pilkington K with  a normal emissivity of 0.15. Figures determined in accordance with requirements of EN 673:1997 for 'normal' exposure conditions. U-Values are rounded to the nearest 0.1W/m2

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