1. Swift Integration: Ensure your parking heater is up and running quickly with the effortless setup of this car heater duct reducer. Its tool-free installation and simple design. 2. Perfect and Stable Performance: Engineered to perfection, it is crafted to deliver stable performance, ensureing an efficient operation of the park heater for consistent heat output. 3. Endurabble and Tough: Made of tough, resilient nylon material that withstands high temperatures, this duct reducer promises long-lasting functionality and optimal performance in even the most extreme conditions. 4. Effortless Cleaning: Engineered for simplicity, our car heater duct reducer not only removes dirt and stains but also ensures the fitting stays clean and functional, just a simple wipe with a damp cloth is all it takes for upkeep. 5. Size: 42/60/75/90mm