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Mi-Flex is a trading name of Mi-Flues and covers all of their chimney liners and components. Made from high quality materials, Mi-Flex produce products to suit both gas/oil appliances and wood/solid fuel appliances. Available in a selection of diameters, Mi-Flex liner can be used to connect a stove, fire or cooker into an older chimney that is no longer of sound construction. Featuring unique and innovative connections and adapters, Mi-Flex offers an extensive range of quality, affordable products.