The Heavyweight-Flex Chimney Liner

Heavyweight-Flex Liner

* Available in round and oval cross sections.

Unbreakable • Double Thick • Super Durable
Our Heavyweight-Flex liners are double the thickness of our smooth wall for ultimate strength and durability with 20% greater draft over equal size corrugated pipe.

Double the thickness of our smooth wall
Continuous seam for unbreakable strength
Available in round or oval cross sections
Fully covered under Lifetime’s warranty
UL listed to 1777 zero clearance standard

Available Specs

We manufacture our liners right here in the USA. They are in stock and ready to ship with the following specs. If you need a size or length that is not shown below, please give us a call. We can customize any liner to fit your needs.

Diameters (inches): 3½", 4", 5", 5½", 6", 7", 8", 10", 12"

Lengths (feet): 20', 25', 30', 35', 40', 45', 50'

Steel Grades: 304L, 316L, AL29-4C