Individual sub-base NAU-3/4-4B-ISO With port pattern as per DIN ISO 5599/1, external dimensions as per VDMA 24345, connections underneath. Conforms to standard=ISO 5599-1, Product weight=1080 g, Mounting type=with through hole, Auxiliary pilot air port 12/14=G1/8, Pneumatic connection, port 1=G3/4