At first I was a bit surprised, because when unpacking a black flyscreen came to light - when shopping I have not paid and actually expected a white to the color selection. However, turned out to anthracite color as much unremarkable and "dursichtiger" than our old white grid. The holes in the mosquito net are relatively closely with an edge length of 1 mm. Whether this is tight enough to prevent even small mosquitoes I can not judge. The construction of the fly screen is done relatively easily with the included tools. Only negative point is that the attached adhesive roll is calculated exactly for the dimensions of the grid. So if you plan to halve this quite large mosquito nets to use it for two windows, so the attached tape will not be enough. Because the product price I could have stayed a longer tape and therefore not expected to be awarded a perfect score.