I can find on this flyscreen nothing bad! The packaging was easy to open and practically thought out, because not all parts fly through each other when you open the package, everything is no tape or cable ties have been firmly plugged into the corners of the carton. The instructions are easy to understand, but you just have to first read carefully, that's clear. The construction went very easy. It requires a hacksaw or a better flex to the strips to the desired size to cut and remove a file or sandpaper to the ridge, which is important, otherwise the parts do not fit into each other later. The fiberglass fabric stretches as part of the sealing strip itself, but you have pfrimeln a little, it is equally tightly on all sides and be installed no unsightly dimples. If you have done that, the grid looks really great! Installation is also really great, with Mounting B also does not require any drill. All in all, strong buy recommendation, even if the grid is slightly more expensive as other products from other companies, but it also has a high quality product that is easy to build and works perfectly afterwards. There are no slots where mosquitoes could afterward by scurrying, the frame is perfectly located on the window. Excellent !!!