3M™ Vortex Cooling Assembly V-100 is used to cool air supplied to 3M™ High Pressure Supplied Air Respirator Systems that use 3M™ L-Series Headgear by up to 50°F (28°C). The assembly allows user to adjust airflow and temperature for personal comfort. This supplied air respirator assembly, when used with approved breathing tube and headgear, can help regulate the flow and temperature of supplied air system. The 3M™ Vortex Cooling Assembly V-100 includes the cooling tube, waist belt and holder.