Air-termination rod GRP/Al for erecting isolated air-termination systems, e.g. on flat roofs, installed in a concrete base with fixing wedge. For keeping the seapration distance according to EN 62305-3. Spacer bar made of glass-fibre reinforced plastic (GRP) D16 mm, UV-stabilised, light grey colour, material factor km= 0.7. Variable, with M10 thread for air-termination tips with thread, air-termination tips with MV clamp or MV clamp for spanning cables.