DuraFlex Basic 4" Kit w/ Increaser Tee With Clean-Out Tee Cap - 25' - 4DF304-25K / 4PVP-T31

strongDuraFlex SW strong is a smooth inner-wall, flexible stainless steel chimney liner. The smooth inner wall provides for no output reduction allowing for full appliance efficiency. Smooth wall construction eliminates ridges that restrict flue gas flow and collect deposits. The lack of ridges facilitates cleaning and maintenance. DuraFlex SW is ideal for relining masonry chimney for wood and gas burning appliances. Listed to UL 1777.

Features

• strongApplications: strongDuraFlex SW smooth wall flexible relining for masonry chimney. Use with gas, wood pellet, oil, or wood appliances. Applications include: fireplace inserts, furnaces, boilers, and water heaters.
• strongMaterials & Construction: strong Single-wall .005″ overlapped 316 stainless steel (totaling .010″). Overlapped to create smooth inner wall.
• strongClearances: strong Clearances 0″ clearance for gas, oil, and pellet applications. ” clearance to masonry for wood-burning applications. Insulation is required for 0” clearance to masonry for wood-burning.
• strongDiameters:strong DuraFlex SW: 3″ – 12″.
• strongListings: strong Listed to UL 1777 (MH45609).