Unitized, coaxial venting system designed for use with direct vent gas or propane stoves, heaters, and fireplaces.Materials and Construction
.020 aluminum inner wall.
.018 galvanized steel outer wall.
Painted outer walls made of laser-welded .018 galvalume steel.
Outer pipe brings combustion air to the appliance.
Inner pipe exhausts flue gases to the outside.
Gaskets or sealants not required (unless specified by the appliance manufacturer).Clearances
Specified by the appliance manufacturer.Diameters
4 x 6 5/8 and 5 x 8.Listings
Pro, in combination with the gas appliance, has been tested and listed
as a decorative gas appliance system or as a direct vent heater system
by a major testing agency, such as UL, CSA, Warnock Hersey, or OMNI.