For Most Champion 5000 7500 9375 watt 2 feet Generator Exhaust Extension - AliExpress
2000-Watt Inverter - Champion Power Equipment
Champion Generator Exhaust Extension & Muffler | eBay
Champion Power Equipment 2500-Watt Recoil Start Ultra-Light Portable Gas and Propane Powered Dual Fuel Inverter Generator with CO Shield 201122 - The Home Depot
Champion Power Equipment CO Shield Electric Start Quiet Technology 8500-Watt Gasoline Portable Inverter Generator in the Inverter Generators department at Lowes.com