Standby Generator, Series: Guardian, Type: Residential, Wattage Rating: 18kW (Liquid Propane), 17kW (Natural Gas), Voltage Rating: 120/240V, Amperage Rating: 75A at 240V (Liquid Propane), 80.8A at 240V (Natural Gas), 200A Switch, 80A Mainline Breaker, Fuel Tank Capacity: 2.2 qt, Fuel Type: Liquid Propane/Natural Gas, Frequency Rating: 60 Hz, Number of Phase: 1, RPM: 3600 rpm Maximum, Alternator Type: Rotating Field, Enclosure Material: Aluminum, Dimensions: 48 inch L x 25 inch W x 29 inch H, Model: G007228-0, Power Factor: 1, Enclosure Type: NEMA 3R, Sound Rating: 55 dBA Quiet Test Exercise, 65 dBA Full Load, Starting System: Automatic, Warranty: 5 yr Limited, Standards/Approvals: cETLus Listed, Prop65 Warning: Cancer and Reproductive Harm @www.P65Warnings.ca.gov, UL 2200