The assembly of the leaf protection grid is really easy to do at exposed gutter. However, if the roof tiles project into the groove, a clean assembly is not possible. If someone has at a location nearby pastures, as is the case with me, the foliage protection is completely unsuitable. I have now, after the first heavy leaf fall, found that two-thirds of the land willow leaves in the gutter. For this leaves the grid is too coarse mesh. The finanzielle- and installation costs were so for naught! I can only each, with the same conditions, advise against buying this leaves the protective screen.