What is the minimum size for company logos when not using approved lettering?

The minimum size for company logos when not using approved lettering is set to ensure visibility and legibility, especially in environments with significant activity and potential distractions, such as an airport. A logo that is too small may not be easily recognized from a distance, which could lead to confusion or hinder effective communication. By having a minimum size of 18 inches, it ensures that logos remain clear and identifiable, aligning with safety and operational standards required within restricted areas like LAX. This requirement emphasizes the importance of maintaining a professional presence while ensuring safety and compliance, particularly in sensitive locations where brand reputation and recognition matter.