When ordering give width first then height.
How to measure for exterior storm windows.
Make sure position the window straight.
Measure opening width at three locations top center bottom measure opening height at three locations right center left round the narrowest width and the shortest height down to the nearest 1 16 and provide these dimensions when ordering.
Specify if the casing is eastern or western.
Determine if window casing is eastern see 4a or western see 4b.
Step 1 measure width begin by measuring the width of the window inside of the frame.
If you find yourself with this project here is a quick guide to help you through the measuring process.
If oriel give the measurement from step 3.
Insert the storm windows.
Measuring for a storm window replacement can be a frustrating task.
Leave about 1 8 inch gap at the top of the storm window to allow the window to expand with the temperature.
Measuring measure opening width at three locations top center bottom measure opening height at three locations right center left round the narrowest width and the shortest height down to the nearest 1 16 and provide these dimensions when.