Quantum is a throwback to a time when people "crafted" products and demonstrated a vested interest in their work. From design innovation to fabrication, Quantum takes an amazingly interactive approach to producing some of the best windows and doors in the Northern Hemisphere.
At Quantum, there really is no standard size, shape or configuration. Every project has its own focus with regards to lumber, hardware, clad, glass, etc. There is no up charge for what other companies would regard as "custom" and no compromise to what you are able to design.