Start your Online Modern Replacement Windows Project and Entrance Door Design Project

1. Measuring the Window Opening Size: Width x Height

1. To Measure the Width: you will need to measure the distance from Side to Side (Jamb to Jamb).
2. To Measure the Height: you will measure the Distance from Top to Bottom (Head to Sill).
3. The starting point for measuring is where you see the window touching the wall. You will find these points on the Left, Right, Top, and Bottom of each window you are replacing.
4. The Points where the window touches the wall on the left and right are the Jambs. You will measure the Width by measuring Jamb to Jamb (Left Jamb to Right Jamb).
5. The Point where the window touches the Top is the Head, and the Bottom is the Sill. You will measure the Height by measuring the distance between the Top and Bottom points (Head to Sill).
6. Measuring the Width: measure the distance between the Left and Right points at the Top, Bottom, and Middle (between the Top & Bottom) of the window. Please write the measurements down.
7. Measuring the Height: measure the distance between the Top and Bottom at the left and Right Sides and the Center of the window. Please write the measurements down.
8. Select the smallest of the 3 Widths and Heights you measured as your Width and Height to order or use to get an estimate. The smallest size measured is the safest size to order. Installers can always build & shim around an undersized window, but it is much harder to deal with an oversized window. The smallest size also safeguards against Windows that are not Square or have become misshapen over time.
9. The Windows will be smaller (by a 1/4 or 1/2 an Inch) than the sizes you measured.https://windowsbyweb.com/door-and-window-facts/how-to-measure-windows/