Had a set of 3 double-hung windows and a double French/garden door installed in our home this year.
No complaints about the windows, they were well built and everything worked properly. The door set was another story. It is a custom French double door set where the left side opens and the right side is a garden door/screen that cranks open. We had a something similar at an old townhouse but it was built as a single unit. The one from Weather Pro was just two separate doors installed side-by-side. It didn't look as good and I don't think it's as secure either. They also clearly used a window crank for the garden door and the install team just sealed the space in between with silicone (see picture).
I called weather Pro multiple times about the ugly door crank and some minor sloppiness in my install. The salesman (Joe) and the office staff never did call me back, but I eventually got a call from the installation contractor. He was good about coming over right away, but I really got the impression Weather Pro just told him to deal with it to make us go away. At no point did they really respond about the handle, so the contractor added a piece of white aluminum to cover the open side, and I ended up adding a cover-up strip to the space between the doors myself.
Weather Pro outsources their manufacturing to an Ontario company and don't seem to have the willingness or control to make changes when something is wrong with that product. I would recommend making sure your product is manufactured locally, or at least by the same company who sells it to you, and can't really suggest using Weather Pro.