"Even if you already own a marine fuel tank, you'll want to consider this option. No more refueling your generator in the middle of the night Keep your inverter generator running for up to 72 hours with the BERG System by joining your generator to the external fuel tank and extending the continuous run time. The vacuum draw technology enables the fuel to flow seamlessly from the BERG System to the generator, thus allowing you to set it, start it and forget it. Compatible With Portable generators, Extended Run Up to 72 hours, Includes The fittings, Common Usage Vacuum draw system. Compatible with Honda EU1000i, EU2000i Generac IX800, IX1600, IX2000 All Power APG3101, APG3102 ETQ IN800i, IN1800i"