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  • Concrete Lintels

    WT Knowles range of Lintels are suitable for use with round flue liners with an internal diameter of 225mm or 300mm

    When determining flue size and size of the fireplace recess opening, the following should be considered:

    Selection of a system will show which products and combinations of products are available for that size of flue liner and fireplace opening

    System 225mm System 300mm