The JCB 12304639 Duct Lagging-Side is an original equipment manufacturer (OEM) part designed for various JCB JS series excavators. This component helps to insulate and manage airflow within the machine's ducting system, ensuring efficient operation and protection of internal components. Weighing approximately 0.05 kg, it is a lightweight yet crucial part for maintaining the integrity of the machine's thermal management. Confirmed fitment includes models such as JS130, JS140, JS160, JS180, JS200, JS210, JS220, JS235, JS240, JS260, JS300, JS330, JS360, and JS460.