In order to select the proper size MW 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 ½ inch larger. The height must also match one of the dimensions listed on the Size Chart or be no more than ¼ inch taller.
   
   
2. Print out a convenient 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. Use the window measurements from the worksheet to fill out an Online Form. Bring the form with when you consult with a building professional. This form will list all your Sash Replacement Kit needs along with kit order numbers, quantity and description of where each kit will be used in your home.