There are two reasons to choose a liner with smooth inner wall. First, it can be a huge advantage for gas or oil furnace relines. Since it means you may not have to upsize to a larger diameter corrugated liner. Second, smooth wall liner facilitates easier cleaning. The DuraFlex SW locking system is strong and rugged, yet it is supremely flexible. Its flexibility makes it easy to uncoil out of the box and easy to pull through chimney offsets.
This item cannot ship to APO/FPO addresses. .
