Description: Product Title: Stainless Steel Air Duct Check Valve, Ventilation Pipe Backflow Preventer, Way Air Volume Regulator Valve. Diameter 125mm, Length 230mmQuality Material: This air duct check valve is made of quality stainless steel, ensuring long lasting performance and resistance to rust and corrosionEasy to Use: The Stove Pipe with Damper can be easily opened or closed with a simple 90 degree rotation, control the exhaust volume of the stove, and vent steam and exhaustVersatile Use: Chimney Pipe is Ideal for use in ventilation pipe and fireplace flues as a backflow preventer, helping to maintain efficient air flow within your systemWidely Used: Stove Pipe with Throttle Flap is suitable for the tent stove, fireplace, wood burner, Camping Stove, and Furnace accessories Specification: Material: Stainless Steel Size Chart: Diameter: 12.5cm/4.92inchLength: 23 cm/9.06 inch Package Includes: 1 Stove Pipe with Damper