DuraVent DuraFlex 7

This category focuses on 7 inch flexible chimney liner systems in the DuraVent DuraFlex product line, organized so you can compare the details that affect fit. Flexible chimney liners are intended for qualified relining projects, where the existing masonry chimney and appliance determine liner selection.

Look beyond the product name: confirm correct series, 7 inch nominal size, listed appliance application, fitting type, and mounting or termination requirements. The DuraVent DuraFlex label identifies a particular product family. Nominal size alone does not establish compatibility with other brands or other venting designs.