What dimensions must installation labels for fixed extinguisher systems contain?

The correct dimensions for installation labels for fixed extinguisher systems, which are 5 inches in height and 4 inches in width, are designed to ensure that the labels are clearly visible and legible. This sizing allows for adequate space to include all necessary information, such as instructions, warnings, or identification, while being easily read from a reasonable distance.

The requirement for these specific dimensions is based on ensuring that users can quickly and effectively identify critical information in emergency situations. Having labels that are too small could lead to confusion or mistakes, especially in a high-pressure environment where time is of the essence. Other size combinations might not provide the same clarity and effectiveness needed for safety communication, making the specified parameters crucial for proper functionality.