Eccotemp 4"x36" Straight Pipe

No Sealant Needed - Features the Highest Pressure Rating in the Industry The Only Metallic Special Gas Vent you can Cut to Length On Site New Fusion Welded Pipe Seams for a Smoother Finish and Better Fit  Compatible with all types of Z-Flex Z-Vent Made of AL-294C Stainless Steel Warranty Length: Limited 25-year warranty