Usage Tips:Package Contents: 1 x Heater Duct Specifications: Model: A71789 Product Name: Heater Duct Material: Aluminum Foil Color: Black Length: 100cm Diameter: 75mm Usage: Suitable for Webasto, Dometic, Planer, etc. Part Number: 102114340000 or 292100010025 or 10025 Features: 1. Shockproof, corrosion-resistant, flame-retardant. 2. Mainly used for 2KW diesel air heaters 3. Suitable for hot and cold air ducts of Webasto diesel heaters, home use, planer, etc. 4.75mm diameter 5. 100cm in length Note: 1. We try our best to provide clear pictures and measurements. Please check to make sure the item is what you need. 2. Please allow 0.5-1 inch error due to manual measurement. (1 inch = 2.54 cm) 3. Due to different computer screens, the color of the actual item may be slightly different from the listing image, thank you for your understanding. 4. Instructions not included! Professional installation is highly recommended, if you want to know how to install it, please contact us via email!