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Calculate the Approximate United Inches or UI of your Windows

UI stands for united inches, meaning the width plus height (i.e. a 36″ x 54″ window equals 90 UI; 36 + 54 = 90).

How to Measure Windows Accurately:

Width - measure between the inside jamb on the left and the right. Height - measure windows from sill to the top of the window opening.

Width:

Height:

Total: Copy text