This 60 to 90 reducer attachment is an indispensable part of any parking heater setup, allowing for the integration of hot air pipes of different sizes. The plastic deceleration buffer valve effectively manages airflow, reducing the risk of overheating and ensuring a steady supply of warm air. Its plastic construction ensures use, even in harsh conditions. Features -Color:Black -Material:Plastic -Size:9.70X9.70X5.80cm/3.81X3.81X2.28in -Diameter of both ends: 60mm, 90mm -Effortless installation: the adapter's design facilitates easy connection between ducts of varying sizes, ensuring a secure and stable fit - construction: made from robust plastic, this adapter is designed to withstand high temperatures and prolonged use -Enhanced heating efficiency: it minimizes air resistance, promoting efficient airflow and optimal heating performance -Protective function: the plastic material provides a buffering effect, safeguarding the heating system and ducting from potential damage -Wide range of applications: this adapter is compatible with various vehicles, making it a versatile and practical solution for heating duct connections Package list: 1 x heating adapter