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Standby commercial generators from Grainger provide you with reliable electricity to help protect your business and your stock in the event of a power failure. Air-cooled standby generators use fans to force air across the engine for cooling, while liquid-cooled standby generators use enclosed radiator systems to prevent overheating. And whether you need an air-cooled standby generator or a liquid-cooled standby generator, Grainger has multiple sizes to choose from, so you can find the right generator for your application. Shop Grainger today!Close