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 roprietary silicone woven fiberglass seal to eliminate leakage of flue gases and fly ash.
Direct-Temp will slide directly onto most direct vent appliance collars. For those appliances that don’t accept Direct-Temp, use an appliance adaptor.