DuraFlex Smooth Wall Stainless Steel Liner - 5.5" x 100'

Ideal for solid fuel, non-condensing gas, and oil-burning appliances, this venting component features a 5.5" x 100' smooth-wall inner liner that improves airflow and decreases creosote buildup for easier cleaning. Crafted from 316 stainless steel, it offers outstanding corrosion resistance—especially beneficial when burning coal or sulfur-rich fuels.