Briggs & Stratton PowerProtect™ DX 20kW Standby Generator 040657The 20kW DX generator is there when you need it most, providing more power on both natural gas and liquid propane than any other generator in its class. The workhorse of the PowerProtectDX lineup, the 20kW unit is backed by the most comprehensive warranty over time with a 10 Year limited warranty. Features Highest Rated Power Output in its Class Get more bang for your buck with the most powerful natural gas unit in its class. 2 Best In Class Warranty