The anti-shock PVC siphon covers are soil products that allow the best drainage of water and liquids from external areas such as streets, squares, terraces, but also from internal environments such as garages, cellars, underground rooms, warehouses, always guaranteeing excellent resistance To the load. The items in this range are produced in various sizes with a non-slip raised surface; high capacity anti-shock PVC siphoned manhole covers are also available in the 20×20 size which, due to their technical characteristics, comply with the UNI EN 1253-1:2004 standard. All PVC siphon manhole covers are composed of two elements which when combined allow the siphoning effect: a body equipped with an inlet for drainage and a removable grid for effective inspection.