Insulated crossbeam with tab for rotating or adjustable fastening element and clamping head for air termination rod or discharge line. The crossbeam can be aligned in all directions. Insulated crossbeam: glass fibre reinforced plastic (GRP), Ø 32 mm, crossbeam length: 500 mm, ISO length: 400 mm, clamping head: aluminium-stainless steel V2A, Ø 8-10 line connection/Ø 16 mm, air termination rod connection, fastening tab: stainless steel V2A, dimensions of fastening tab: 40 x 30 x 4 mm (length x width x thickness), bore of fastening tab: Ø 12.5 mm.