- Includes not only exit doors but the corridor, aisle, or stairwell that you must traverse to reach the exit.
- Main aisles inside the lab leading to the exit must be at least 48 inches wide and must not have “trip hazards” or other obstructions such as equipment (temporary or permanent), boxes, or supplies.
- All other aisles must be at least 36 inches wide
- Stair wells may not be used as storage areas for equipment, chemicals, janitorial supplies, etc.
