This breathing air panel with four couplings has a flow capacity of 79 cubic feet per minute. It offers 50 cubic feet per minute filtration and meets the CSA Z180.1 and NIOSH standards. The air panel has a 1/2 inch industrial interchange inlet and provides grade-D breathing air for four users. A built-in carbon monoxide monitor operates on 9V DC and/or 115V AC for continuous detection.