The Grainger Generator Cord with Box is a 4 foot, 20 amp, 125 volt generator cord with a NEMA L14-20P twist lock plug on one end and a NEMA 5-20R receptacle on the other end. It has a yellow jacket and is UL listed. This cord allows you to connect a generator with a L14-20R outlet to equipment that requires a 5-20P plug. The twist lock plug ensures a secure connection to the generator. The cord is suitable for both indoor and outdoor use. With a 20 amp capacity, it can handle up to 2400 watts. The 4 foot length provides flexibility in positioning the generator and equipment. Overall, this is a heavy duty, versatile generator cord for connecting a generator to 120V equipment.