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    Window and Doorset Energy Rating

    Hydro Building Systems UK Limited
    Severn Drive
    Tewkesbury
    GL20 8SF
    United Kingdom
    BSI logo

    Certificate Number: KM 564943
    Scope: Window & Door Energy Rating

    Original Registration Date Effective Date Last Revision Date Expiry Date
    2010-09-21 2024-06-26 2024-06-26 2027-06-07