Specification: Product Name: Crude Oil Air Heater Accessory Exhaust Silencer Material: ABS Suitable for the following air heaters: for Airtronic D2 for Airtronic D4 for Airtronic D4S for D1LC for D1LC Compact for D3LC for D3LC Compact for D5LC Part Number: 251864810100 Exhaust Pipe: Color: Silver Material: Stainless Steel Length: 60cm (stretching) Diameter: 24mm Air Intake Pipe: Color: Black Material: Aluminum Foil Length: 50cm (stretching) Diameter: 25mm Package Included: 1 * Muffler 1 * Intake Pipe 1 * Filter 1 * Stainless Steel Tube 1 * Set Clamps Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.