Air catch rod system for Kalzip roofs, consisting of fastening cross, [4x], Kalzip fastening 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: aluminum, Ø 16/10, mm (length 2,000 mm)