DESCRIPTIONMF20 MI-FLEX accessories 0.6mm 316 stainless steel is a premium range of heavy duty fittings made using 0.6mm 316 stainless steel. This family of installation fitting has been perfectly designed for use with MI-FLEX 316 and 904 flexible flue liners. When fitted in conjunction together it will make a full system chimney. GENERAL APPLICATIONThese items are to used in conjunction with MI-FLEX Multi fuel flexible flue liner. Building Regulations Document J requires that a flexible flue liner can only be installed completely enclosed inside a masonry chimney. A non masonry enclosure such as timber or plasterboard boxing in is not acceptable. All items are suitable for use on appliances up to 600°C (T600 designation). Suitable for use on Wood