Stainless steel flue liner reducer for chimney lining connections. This reducer is designed to connect an appliance to a chimney liner, stack, or twin wall flue system. It can also be used when relining existing masonry chimneys. Suitable for reducing the diameter of rigid round flue pipes. Ideal for use in heating, ventilation, and air conditioning systems where a rigid pipe connection is required. Made from durable stainless steel for long-lasting performance. Clean the connection area with a wire brush before sealing to ensure proper adhesion. Use high-temperature resistant stove pipe cement or caulking material rated for wood stove applications. Available in multiple size combinations including 60mm/50mm, 70mm/50mm, 110mm/50mm, 70mm/60mm, 80mm/60mm, 90mm/60mm, 100mm/60mm, 110mm/60mm, 120mm/60mm, 80mm/70mm, 90mm/70mm, 100mm/70mm, 90mm/80mm, 100mm/80mm, 100mm/90mm, 110mm/90mm, 110mm/100mm, and 120mm/100mm. Material: Stainless steel. Package includes: 1 x Stainless steel flue liner reducer. Note: Actual color may vary slightly due to monitor settings and lighting conditions. Slight measurement deviations may occur due to manual measurement.