The high-performance pre-filter mat type Öko-Tex made of PES is at least 13 mm thick, progressively needled with step filter, node stiffening and additional heat treatment. Weight per unit area approx. 350 g/m².
The pre-filter mat is available in prefabricated sizes for e.g. soakaways or drainage channels. Whole rolls are approx. 5 m wide and approx. 48 m long.
Areas of application: seepage shafts, stormwater treatment, technical filters, retention, substrate channel, drainage channel, filter basins, infiltration troughs, infiltration basins, sponge city