DuraVent 4" Flex Chimney Lining Kit w/ LB2

Use for a vertical flex lining system. Includes black, UV resistant chimney cap, rigid flue vent, flex support bracket, 4 spacers in 3” & 4” kits, male and female flex adapters with gaskets, extended support elbow, wall plate, appliance adapter, Locking Band, and Adapter Connector clamp. Flex sold separately. PolyPro is engineered for use with category II and IV condensing gas/oil appliances and heating equipment, including tankless water heaters, high efficiency water heaters, condensing boilers and warm air furnaces. Application PolyPro is a polypropylene vent pipe for use with ANSI Category II and IV gas-burning appliances, including high efficiency water heaters, condensing boilers and warm air furnaces. PolyPro is listed by Intertek to the ULC SC636 standard in Canada as a Class IIA, IIB and IIC vent system suitable for exhaust temperatures up to 230F / 110C, and a maximum positive pressure of 15 in-w.c. Materials and Construction Rigid pipe constructed of 2.2mm (minimum) thick polypropylene. Flex is ...