The "Base 485" is a crucial component in the assembly of certain Napoleon grills, likely in the LEX series, specifically the LEX 485 model. It serves as the foundation or lower section of the grill, providing stability and support for the rest of the grill components, including burners, cooking grids, and other essential parts. The Base 485 is designed to house various components such as the gas supply connections, ignition systems, and sometimes storage areas for propane tanks or other accessories, depending on the specific grill model. When assembling or replacing parts of your Napoleon LEX 485 grill, it's essential to ensure that the Base 485 is securely in place, as it forms the foundation for the grill's overall structure and functionality. Proper assembly and maintenance of this component contribute to the safe and efficient operation of your grill, allowing you to enjoy your outdoor cooking experiences to the fullest.