For connectable roof areas up to 3,500 m².

The 3P Inox filter wall is used to clean rainwater from roof surfaces so that it can then be collected in a cistern, infiltrated or discharged into a receiving watercourse.
The rectangular filter wall, arranged in the middle of a prefabricated concrete shaft, is fitted with a stainless steel screen mesh. With a mesh size of 0.39 x 0.98 mm, particulate pollutants can be safely removed from the rainwater.

The rainwater is thus purified and available for further use. The dimensions of the inlet and outlet nozzles as well as the screen area are dimensioned according to the size of the connected area

Function:

The rainwater entering the concrete shaft is dammed up to the base height of the filter wall. It then flows evenly from one side to the other through the rectangular filter surface.
The cleaned rainwater flows out via the drain on the opposite side. The volume between the base of the column wall and
the concrete wall of the surrounding shaft serves as a silt and sand trap.