We were looking for a double blind in 90 cm width and installation without drilling. The shade of bright spot keeps all its promises. Material quality is perfect and easy to Motage. We use the clamping mechanism which is mounted directly run on the window sash. Rollo unpack postpone holder, attach weight ... and ready. Stuck on the window sash and squeeze bracket by hand. Bombenfest! Could not be simpler. -> For these purposes, an absolute buy recommendation