Excellent service, they even refunded me the extra I paid for shipping. I was a bit surprised when I opened that box; it's bigger than I was expecting. I made a sticker with the nickname "Blue" for it. I change them for "Big Blue" LMAO. I check the sine wave with my handheld scope and they look good, no huge spikes or almost square waves look alike at low or high RPM.
PS: The maintenance kit for this generator is presently on backorder.
Westinghouse - iGen 11000TFc Inverter Generator - TriFuel with CO Sensor (11027)