Carriage Assembly Cover for DesignJet 10 20 30 70 90 100 110 120 130 plotter; printhead upper cover Replacement carriage assembly cover designed to fit DesignJet 10, 20, 30, 70, 90, 100, 110, 120, and 130 plotters.This cover serves as the upper printhead cover and is engineered to protect internal components of the printer's carriage assembly.It installs directly into the plotter unit and helps maintain proper alignment and of the printhead mechanism.The part is constructed to match the specifications for consistent fit and function.