Manual fire alarm boxes shall not be less than ____ inches and not more than ____ inches above the floor level.

Manual fire alarm boxes are required to be installed within specific height ranges to ensure that they are easily accessible to all individuals, including those who may be in a hurry during an emergency. The guidance that stipulates the height of installation is often based on standard practices and codes designed to promote safety and effectiveness in fire alarm systems.

The correct height range for manual fire alarm boxes is 42 to 48 inches above the floor level. This height is intended to make the boxes reachable for most people while positioned in environments like hallways or lobbies, ensuring that in case of a fire, individuals can quickly and easily activate the alarm system without difficulty. The specified range also caters to accessibility for individuals of varying heights and abilities.

In this context, options that suggest heights outside this specific range would not fulfill the requirement, as they either place the boxes too low—potentially making them hard to find quickly in a panic—or too high, making them inaccessible for a significant portion of the population.