Air catch rod system for RIB-ROOF 500 roofs consisting of fastening cross, [4x] RIB-ROOF 500 clamps (including required connecting elements such as screws, spring washers and nuts) and optimal air catch rod, fastening cross: stainless steel V2A, 700 mm (diagonal), fastening clamps: [4x] stainless steel V2A, optimal air catch rod: Ø 16/10 mm (length 2, 000 mm)