"This portable power distribution center is engineered with the latest in GFCI technology, giving the user the highest level of electrical safety in open, neutral and reverse phasing protection. Each four-circuit power box is provided with four separate 20A 125V GFCI-protected circuits. Each circuit has its own breaker and GFCI device, offering two outlets per circuit. U.S.A. Dimensions L x W x H in. 16 x 12 1/2 x 11, Volts 125/250, OSHA Approved Yes, Amps 50, UL Listed Yes, Application Temporary power distribution center. 6ft. cord Straight blade receptacles UL listed No assembly required"