Answer
To specify letter height, select the text box you wish to edit. In the left sidebar that says “Text Style,” you can type your desired letter height in inches (located under the font dropdown bar and next to the formatting buttons – Bold, Italics, and Underline).
Letter height is important for both readability purposes and also legality. Review our
Sign Letter Height Visibility Chart to determine how tall your letters should be to be read from a distance. As for legality, check with your local DOT or landlord to see if there are any regulations about letter height on promotional material.