Part Number: 4DF316-20
eFireplaceStore Item Number: CPF-68201
*Venting Requirements: This unit requires venting pipe with an inner diameter of 4 Inches. Please see the Venting Components section on this page for venting pipe that must be used with this unit.
DuraFlex SS is a flexible chimney liner used to reline masonry chimneys and is rated for use with gas, wood pellet, oil, or wood appliances that include water heaters, boilers, furnaces, and fireplace inserts. It uses a single wall 0.006" thickness that makes it stronger than other light liners. DuraFlex SS is the most economical liner for a straight chimney. This item gives you 20 feet of 4" liner. It should be used with the DuraFlex Zero Clearance Insulation Sleeve so that the UL 1777 standard for masonry chimneys and wood burning appliances is met.