Inspection opening in the underwater area, pressure-resistant up to 10 m water column.
Inspection hatch, pressure-resistant up to 10 m water column, round, made of stainless steel. Can be covered on both sides.
Viewing window, consisting of a 15 mm thick plexiglass pane curved towards the pressure side. Sealed by two rubber seals. Clear viewing diameter: 400 mm.
Wall tube with welded-on wall flange in the centre, prepared for setting in concrete. Wall flange dimension: 616 mm.
Wall conduit welded under inert gas, pickled and passivated in an immersion bath.