Peripheral devices that can be used as an additional device for tanks that are not equipped with integrated filters. They can also work as a supporting filter if the filter integrated in the tank is insufficient in comparison with the dimensions of the roof slope. Filters can also be installed before the rainwater infiltration system in the ground, in order to protect the infiltration system against the influx of pollutants (leaves, sticks, other fractions). Provides protection against siltation and clogging of the system.
