Vacuum/Inert Manifold, 4 Ports, 500mm Overall Width. General purpose double bank vacuum manifold with 4 ports for use with vacuum and inert gas. Both tubes are 1/2 OD and have the upper left and lower right banks open. Ports are 0-4mm Chem-Vac™ Chem-Cap valves and are spaced 100mm center to center with 9mm OD tubulation.