Flextral DU98 heater duct features a high temperature 500°F silicone starter section.  This silicone starter section is able to withstand the ultra-high temperatures experienced at the tip of a heater.  Traditional heater duct is unable to withstand these extreme temperatures.  This abuse ultimately results in premature ducting wear and failure at the heater outlet. After the first couple feet off of the heater line, the temperature mitigates which allows the DU98 to transition into our standard high temperature heater duct material.

Don’t need the high temp starter section or need to add additional ducting lengths to the run of duct? Check out our DU88, standard heater duct, which will accommodate these needs.