Always ask your customers, "how far away will the banner be from the viewer?" If a grand opening banner will be on the front of a business with a large parking lot between the storefront and the street, the letter height must be large enough to be viewed by drivers on the street. Also, keep in mind that a driver only has about 1.5 - 3 seconds to read a message while in motion. The chart below will help determine the correct height vs. viewing distance.
From Keri Collet, published on www.signindustry.com
From Keri Collet, published on www.signindustry.com
