4" X 6-5/8" Selkirk Direct-Temp Pipe - 12" Length. Direct-Temp is two vents in one. The outer vent supplies fresh outside heated air for efficient combustion. The inner vent removes the flue gases from gas, pellets, and corn. The connections feature a proprietary silicone woven fiberglass seal to eliminate leakage of flue gases and fly ash.
WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.