We are often asked to "price shutters for a standard-size window." A standard-size window is as vague as a standard size house. Manufactures such as Pella Windows, Marvin Windows, or Anderson Windows manufacture standard or stock-size replacement windows in multiple sizes and styles. These window are manufactured so customers can select windows off-the-shelf at stores such as Home Depot or Lowe's. However, many of the windows sold today are custom sizes. Window styles include double hung, gliding, picture, casement, and bay / bow windows. Each window size and window type will result in a price difference for interior shutters.
Shutters are then custom built to fit these different window styles. The window width and the interior shutter style (plantation or traditional) determines the number of panels that can be used in the window. The window height determines if the shutter unit can be single tier, double tier, or cafe height, and if the shutter panels require a divider rail.
Many shutter suppliers calculate price based on the square foot. This strategy is usually not advantageous to the customer. Sizes get rounded up, and the end consumer ends up paying for more than they received. Prices calculated based on exact window size, shutter, style, finish, and number of panels is the most effective method.
Bottom line: the most accurate way to price shutters is to measure your existing window. Final measurements should be taken following the exact measuring instructions provided by the company from which you will be ordering shutters. See further information about installing interior window shutters