The Cool-Box provides approximately 50 degrees F output air temperature with input temperatures up to 180 degrees F. It requires only 20 pounds of ice for operation and provides 4 to 8 hours of cooling. Features include an adjustable pressure regulator, gauge and safety relief valve installed in the system with a final filter. The Cool-Box provides low cost cool breathing air anywhere. It is ideal for cooling Level “A” chemical suits and air supplied hoods, providing cool air for up to four workers. this system provides NIOSH point-of-attachment components and cooling in one package.