HP OEM HP DesignJet L25500 Air Pressure System (APS) assembly - For 42-inch plotters;;HP DesignJet L25500 Air Pressure System (APS) assembly - For 42-inch plotters;HP, DesignJet, L25500, Air, Pressure, System, APS, assembly, 42-inch, plotters, Q6651-60300;Brand: HP