Letter sizing matters! It’s an often overlooked aspect of creating custom signs, but letter size is one of the most important features to consider when designing a sign. Letter size (also referred to as letter height) will determine from how far away your message can be read. Lettering that is too small or too big will affect how the quality of your sign, so it’s crucial to know what letter height works best for a particular viewing distance. We’ve compiled a list of key features of lettering – including font size, color, type, sign placement, and lighting conditions – that you should pay attention to when designing your sign.