What is the minimum height, in inches, for characters in address identification?

The minimum height for characters in address identification is 4 inches. This specification ensures that the addresses are easily readable from a distance, which is crucial for emergency responders and delivery services. A height of 4 inches strikes a balance between visibility and maintaining an aesthetically pleasing design, making it practical for both safety and functionality.

Characters that are too small may lead to confusion or misidentification, particularly in low visibility conditions or at a distance. Therefore, setting the standard at 4 inches helps to enhance the effectiveness of address signage in commercial buildings, ensuring that they meet both safety regulations and are user-friendly.