Festo manifold sub-base NAV-3/8-2C-ISO With port pattern as per DIN ISO 5599/1, for manifold assembly, connections underneath. Conforms to standard=ISO 5599-1, Authorisation=UL – Recognized (OL), Product weight=400 g, Auxiliary pilot air port 12/14=G1/8, Pneumatic connection, port 2=G3/8