Final answer:
MasterSpec's Division 21 covers fire suppression systems, providing technical specifications relevant to fire containing components for professionals involved in building design and construction.
Step-by-step explanation:
The division of the MasterSpec that covers fire suppression systems is Division 21. Specifically, within that division, the sections that deal with fire suppression include fire extinguishing systems, fire pumps, standpipes, and other related components essential for controlling and extinguishing fires within a structure.
MasterSpec provides comprehensive technical specifications for projects and is often used by architects, engineers, and construction professionals as a guideline for product selection and system detailing to ensure compliance with building codes and safety standards.