Space-saving and cost-efficient. Specifically designed for use in private and rural areas. 

  • The Graf infiltration tunnel has been mainly designed for the use in private and rural areas
  • The system which consists of one or several tunnel modules and two end plates can be extended at will
  • The laying is realized in one or more lines of the same level
  • As the weight of one module is only 11 kilos, the handling of the infiltration tunnel is excellent
  • The surface beyond the tunnels is lorry-bearing which offers versatile possibilities 
  • The infiltration tunnel can be loaded permanently up to 59kN/sqm and thus is also suitable for lorry-bearing
  • 5 years warranty


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