Architectural shaped windows are custom made by a window manufacturer into specific geometric shapes. Heat is applied to a standard vinyl window in the manufacturing process and the new window permanently retains the geometric shape it was formed into.

Shaped architectural windows come in several designs including: half circle, full circle, oval, quarter arch, cathedral, trapezoid, eyebrow, and octagonal windows. Shaped window designs are popular in many modern home designs and are often combined with other more standard windows in a custom pattern.