The three blinds that I bought for some 35 year old Velux windows were ideal and fitted well first time. I would like the instructions to be in English rather than just pictures, which weren't the best to follow. Youtube helped with the fitting process, but it all went without a hitch after that. As the windows were so old, I needed an extra piece to allow the blinds to attach to the top of the frame. These were easy to do, but I think they could have included free of charge as they were only a small square of plastic. Overall, Velux are a good company and the blinds are of good quality and pretty simple to fit.
