Window & Door Company

3000 N. Township Blvd Pittston, Pennsylvania 18640
800.338.9997 • 570.655.2811

NTERSTATE

How to Measure Windows

Take both vertical and horizontal measurements.

It is important to understand that over time the size of a window opening from bottom to top and side to side can change due to construction or settling. This can lead to slightly incorrect measurements and window failure if an incorrectly sized window is installed. Measure from three different spots horizontally and vertically in order to eliminate inaccuracy.

For measuring the width, measure from jamb to jamb. For measuring the height, measure from the sill to the header. When you have completed all six of the measurements, select the smallest of the width measurements and the smallest of the height measurements and use this for your final measurement.