DuraVent DuraFlex SW 4" x 180' Stainless Steel Custom Length w13.50 2001' to 4000' above sea

2001' to 4000' above sea level - P500332

and 90 Degree elbow (SLP90)

See venting section of install manual

Weight: 57

DuraVent DuraFlex SW 4" x 180' Stainless Steel Custom Length w13.50 2001' to 4000' above seaDuraFlex SW is a smooth inner wall, flexible stainless steel chimney liner. The smooth inner wall provides for no output reduction allowing for full appliance efficiency. Smooth wall construction eliminates ridges that restrict flue gas flow and collect deposits. The lack of ridges facilitates cleaning and maintenance. DuraFlex SW is ideal for relining masonry chimney for wood and gas burning appliances. Listed to UL 1777. What's Included Length