Heavywall is extremely durable chimney liner and made from .015 Stainless Steel. It features an interlocked design to maximize strength and ﬂexibility. It’s the most rugged liner we recommend for those tight winch-able situations. 304 can be used for wood burning appliances. Heavywall can withstand being ovalized and rectanglized to accommodate for unusual oﬀsets or rectangular chimneys. When a liner is taken “out of round” it does reduce the cross sectional area.
Not available in a kit; components are sold separately, ovalizing also available, call office for more details. 13-18 inch diameter available by the foot call office for more details.