Air Systems International 4-Worker Low Pressure Breathing Air Compressor operates 2 hood style respirators or 4 tight fitting constant flow masks and has a capacity of 16 CFM at pressure and 20 CFM at 4 psig. Air pump includes prewired with on/off switch and 115 VAC plug, 0.5 - 0.7 micron inlet, compressor filter and 0-30 psig pressure gauge. It has 2 Hp, TEFC, 115/208-230 VAC and 20.0/10.0A electric motor.