Stand size vinyl windows are widely available at big box stores. The downside to this is not only in the quality of the window, but they require adjustments to the opening that lead to an unsightly finished product. Not to mention the loss of glass surface and view.
It’s not all about the window quality and size of the window that is important. The installation is 80% of how your window will perform as well as its longevity both functionally and aesthetically. Companies and installation crews are known to cut corners on many facets of the job to get it done quickly. Fasteners, insulation, making the frame plumb, and exterior trims are all separate procedures that must be done correctly.
Starting with inadequate insulation, a sub par installation can sometimes take years to rear its ugly head. Improperly insulated and flashed windows will likely grow mold behind your walls and homeowners won’t notice it until it is already an extensive problem.