In order to select the proper size Ply Gem Windows Sash Replacement System kit for your home's windows, you'll need to:

  1. Measure your window openings (see “How to Measure Your Window” at left). The width of your window opening must match one of the dimensions listed on the Size Chart or be no more than inch larger. The height must also match one of the dimensions listed on the Size Chart or be no more than inch taller.

  2. Print out a convenient Measuring Worksheet that will help you keep track of your different window openings and will be used to determine the correct kit sizes to order.

  3. Before you can select the correct sash replacement kit for your project, you will first need to record the accurate heights and widths of the opening for each window you plan to replace. You can use the Window Size Worksheet to write down your measurements and match them with the provided sizing table.