Very happy with this product!  Fits perfectly for most patio doors and pretty simple to install if you know what you are doing.  Just be aware that the instructions include very few explanations or even words so if you have never hung vertical blinds before then please do your walls and yourself a favor get help from a friend or YouTube.  It does come with template but doesn’t really explain where to put the middle two wall mounts.  Just be sure not to place them too close to the center mount otherwise you won’t be able to attach them to  outer rails. All in all very happy with this purchase!