Accessible mirrors MUST be mounted with the edge of the reflective surface no higher than ______" AFF.

The requirement for accessible mirrors to be mounted with the edge of the reflective surface no higher than 40 inches above the finished floor (AFF) is crucial for ensuring that individuals who use wheelchairs and those of varying heights can use the mirror effectively. This specific height aligns with the guidelines established by the Americans with Disabilities Act (ADA), which aims to provide equal access to facilities for all individuals, including those with disabilities.

Mirrors mounted at this height facilitate usability by allowing people seated in wheelchairs, or those of shorter stature, to see their reflections without difficulty. The 40-inch guideline assures that the mirror is within reach for these individuals, making it an essential consideration in the design of accessible restrooms and other similar facilities.

In contrast, the other heights provided may exceed the maximum allowable height for accessibility. If mirrors are mounted higher than 40 inches, they may not be usable for all individuals, which would not comply with the intended purpose of accessibility guidelines. This height restriction aligns with not just comfort but also with the legal requirements for ensuring equal access to public and commercial spaces.