Features: Engineered with 99% efficiency, this parking heater air filter optimizes combustion while blocking particles, extending heater and improving efficiency by 15 20% compared to standard . Constructed from PP+steel wire materials, the flexible 25mm diameter pipes withstand extreme temperatures ( 40°C to 50°C) and feature resistant connectors for compatibility with most parking heaters. Ideal for long truck , logistics fleet operators, and commercial vehicle owners requiring cabin during winter stops without draining engine power. Maintains optimal heater in conditions, ensuring rapid cabin warmth during rest periods or overnight parking at freezing mountain routes and remote job . The multi layer washable outperforms single layer by contaminants, reducing maintenance frequency by 30% through easy functionality and reinforced structural integrity. Specifications: Type: Parking Heater Air Filter : Color: As shown in the picture Temperature : -40℃~50℃ Diameter: 25 mm Suitable for: Parking heaters Package Includes: 1 set x Parking heater air filter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.