WEN inverter/generators models 56200i and 56225i are compatible with MERGS and are available on Amazon...
Generator manufacturers advertise a burn rate of approximately 1 pint per hour when the generator is under a constant 25% load. The generator's internal tank & the MERGS tank provide over 50 pints of fuel--thus over 50 hours of run time under those conditions...
Reach out to the reliable team at Morgan Extended Run Generator System to learn more about our external fuel systems.