"Protect your business from unproductive and expensive downtime The Ingersoll Rand Duplex Reciprocating Compressor offers two individual 2-stage pumps and two motors mounted on a single 120-gallon horizontal tank, providing 100 built-in backup you'll have a motor and pump running even when one is down or additional air power for large-capacity jobs. Features the legendary T30 pump with value-added features in a space-saving design. 175 max. PSI, 230V, three-phase. Requires two Ingersoll Rand start-up kits, Item# 15920081 sold separately. Air Tank Size gal. 120, Dimensions L x W x H in. 87 x 33 x 52, Volts 230, Drive Belt, HP 10 2, Pump Life hrs. 10,000, Max. PSI 175, Pump Cast iron, splash-lubricated, CFM at 175 PSI 70.4, Duty Cycle 100, Tank Type Horizontal, Motor Phases 3, Stage 2."