The INCREASING FLUE ADAPTER TO CHIMNEY LINER connects single wall stove pipe to a Flexible Flue Liner of a one inch greater internal diameter. This steel adaptor has a twin wall top end to accomodate the Flexible Liner which can be secured in place with a High Temperature Fire Cement and self-tapping screws (not supplied).
This version will adapt from 4" - 100mm pipe to 5" - 125mm Flexible Liner