DuraFlex Smooth Wall Stainless Steel Liner - 5" x 35'

Well-suited for solid fuel, non-condensing gas, and oil appliances, this venting system features a 5.5" x 100' smooth-wall inner liner that boosts airflow and helps prevent creosote buildup, making maintenance more manageable. Built from premium 316 stainless steel, it delivers superior corrosion resistance—ideal for use with coal or other fuels that produce sulfur byproducts.