Space-saving and good value. Specifically designed for use in private and rural areas. 

  • Specially designed for the detention and infiltration of rainwater, for a controlled drainage of rainwater into the groundwater.
  • The infiltration tunnel twin is space-saving and cost efficient.In comparison to the infiltration tunnel, it offers on the same buildingarea a double infiltration- or detention volume- 600 litres.
  • The infiltration tunnel twin is laid on one level and can be expanded as necessary.
  • The installation of the modules is easy and quick.
  • The installation can be done without heavy equipment. One infiltration tunnel twin only weights 20 kg.
  • The single modules are stacked in line and provided with two end plates.
  • In order to facilitate free design of the surface above, the system can be permanently loaded with approx. 3.5 t per m2 and, thus, is suitable for vehicle loading.
  • 5 years warranty

 

Advantages

Thought-out in every detail

Saves precipitation water charges
Saves precipitation water charges
Saves precipitation water charges

This product allows you to save on rainwater charges. Please contact your municipality for more information.

Logistics optimised
Logistics optimised
Logistics optimised

Up to 40 GRAF seepage tunnels (12,000 l volume) can be stacked on one pallet. This minimises transport costs, storage space and CO2 emissions.

Saves precipitation water charges

This product allows you to save on rainwater charges. Please contact your municipality for more information.

Logistics optimised

Up to 40 GRAF seepage tunnels (12,000 l volume) can be stacked on one pallet. This minimises transport costs, storage space and CO2 emissions.

Sizing

Volume [l]Length [mm]Width [mm]Height [mm]Weight [kg]Quantityorder no.add to enquiry
60011608001020221410130

calculated size Request for information

Accessory