Briggs & Stratton Automatic Home 12,000-Watt Stand-by Generator 1815 12,000-watt automatic home standby generator with durable Briggs &amp; Stratton 627cc Vanguard engine Runs on clean burning natural gas or liquid propane; Sound Shield Technology reduces noise Computer-friendly internal voltage regulator protects sensitive electronic equipment Rust-proof outdoor enclosure with premium automotive paint for maximum durability Non-CARB Compliant/Not For Sale In California