FIRMAN, 30A, Parallel Kit with TT-30 (RV) Plug, double or even triples your power by connecting two FIRMAN Inverter generators together. It can combine any two Inverters from our FIRMAN Inverter family, whether that be our smaller 2100 Watts to our larger 3300W generators. Integrated outlet covers come standard on our parallel kit to protect the outlets from dust and debris. We've also included an LED light under each outlet for improved visibility anytime.