PVC drainage pipe with coconut filter

PVC drainage pipe, corrugated, in a coil, with coconut fiber wrapping

The coconut filter protects the drainage pipe from sediment accumulation and also improves the water intake capacity of the drain.
Drainage pipes with a coconut filter are particularly suitable for draining clay soils, but they are also used in other soil types where, due to soil bearing capacity and the risk of collapse, it is difficult to install other types of filters in the trench.
The filter is made of organic material, which should be taken into account when planning the system's lifespan.