The AV Stumpfl PP Mega Tube DN400 is a polypropylene tube with an outer diameter of 45.3 cm and an inner diameter of 39.2 cm. It is identified as an SN8 PP-Mega-Rohr and has an overall length that is not specified in the available documentation. The tube has a gross and net weight of 40.0 kg. Manufacturer article number: BFV-R/PP/M/DN400.