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ZoneBloc®, Type Z, is a proprietary temporary concrete barrier developed by Hill and Smith. It has been successfully crash-tested in accordance with MASH Test Level 3. ZoneBloc® has been designed as a narrow barrier being only 300 mm (12 in) wide. ZoneBloc® is approved as a freestanding, narrow category III barrier. There has also been a variant called ZoneBloc+®. This is a restrainable version to meet restraints permitted category IV standards.

    MTOD# 911.190 Dimensions: .815m (H) x 9144mm 32" (H) x 30'
    Construction Specification for Concrete Barriers Construction Specification for Temporary Concrete Barriers Type X Installation Drawing - 9.1 length
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