These safety nets are suitable for your trampoline:

183 cm trampoline / hooked inner safety net / 6 bars

Safety Net w/o Poles for Trampoline inSPORTline Flea 183 cm
  40,10 
In Stock
Safety net for inSPORTline Flea trampoline, entrance is secured with zipper and … Buy
Safety Net w/o Poles for Trampoline inSPORTline Flea PRO 183 cm
  49,10 
In Stock
Protective net for safe jumping on inSPORTline Flea PRO trampolines! Entrance is … Buy