are intended for use by building occupants, such as employees, residents or members of the public, and include a hose station containing a 1.5 in fire hose and nozzle pre-connected to the standpipe. Class II systems have become less common in recent years, but are still found in buildings.1.5 in hose no longer than 100 ft must be installed and ready for firefighting usage in Class II systems.

Class II systems are required to be 'wet', except in regions subject to freezing temperatures and on-site personnel, such as an industrial fire