They are coarse screens produced in accordance with in-channel installation in small-scale treatment plants. It is used to reduce the solid matter load of the fine screen after the coarse screen. For the cleaning of the grid, there is a grid rake, and the solid materials that are moved up with the rake are collected in the perforated basket behind the grid and removed from the system when necessary. The perforated basket is produced in a way that it can be put back into place after it is removed and emptied in order to facilitate the removal of solids from the system.
