One problem is that the ends are quite large and if you must install them in a cramped amount of space you may find the ends bumping each other if you have adjoining windows. We have angled windows and that happened to us. Not a great result but a temporary fix for the winter. Another problem is that the mounts are too long so that the curtains do not touch the walls. Drafts can definitely come around the sides and top of the curtains. If the mounts were shorter, more air could be blocked. The sections of rod do slide together beautifully. One had a few minor scratches. If you like the bulkiness of the style and don't have to mount them right next to each other on more than one window, these are fine to get. We bought these in the long and short versions. Only one package had a defective screw which was mangled but otherwise all the hardware was in good shape.