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    BS EN 771-4

    Tarmac Building Products Limited
    Linford
    Stanford-le-Hope
    SS17 0PY
    United Kingdom
    BSI logo

    Certificate Number: KM 24021
    Scope: Specification for masonry units - Autoclaved aerated concrete masonry units

    Original Registration Date Effective Date Last Revision Date Expiry Date
    1993-04-27 2024-03-14 2024-03-14 2026-12-01