Constructed from UL1738 and ULCS636 listed polypropylene, InnoFlue vent lengths are the central component in our industry leading vent system. Engineered to withstand flue gas temperatures up to 230°F (110°C), InnoFlue vent lengths provide an environmentally friendly venting solution that installs quickly without any glues, primers, or solvents. InnoFlue vent lengths are thin-wall and lightweight combining performance and durability.