The product seems good and the effect on the room where they are fitted is great , bringing the outside in. On the downside they were installed badly (by a third party), the sliding doors are stiff , both doors / sets are very drafty so may need adjusting and the threshold height is too high due to installation errors. The service from Origin themselves so far has been very good, but our relationship with the installer has broken down . The installer also had to replace a large number of windows (after we had to obtain an independant report ) that they had installed as they were the wrong size or damaged by them during failed remedial works (8 number so far). The installer still has works outstanding on the site but we have not heard from them for 2 months. Installation of the Origins started in August 15 and trims were not completed until December 15. So the conclusion is that Origin provide a quality product and service but be very careful who installs them . Maybe Origin could be more selective about who they allow to install their products . Due to the problems (which may not be due to Origin) I am disappointed at present.