The generator set and its components are prototype-tested, factory-built, and production-tested;The generator set accepts rated load in one step;A premium 5 year/2000 hour limited warranty covers all systems and components;Quick-ship (QS) models with selected features are available. See your Kohler distributor for details;Meets 291 kph (181 mph) wind load rating;GFCI service outlet installed on the junction box