DuraFlex Smooth Wall Stainless Steel Liner - 7" x 35'

Engineered for use with solid fuel, non-condensing gas, and oil appliances, this venting system is designed with a 7" x 35' smooth-wall inner liner to improve airflow and reduce creosote accumulation for easier maintenance. Made from high-grade 316 stainless steel, it offers excellent corrosion resistance, making it especially suitable for applications involving coal or sulfur-based fuels.