Guardian's 100-Amp Distributed Load Center ensures the easiest, trouble free installation. You simply pick 16-circuits that you want to power during an outage. Most people choose this option. Guardian offers a steel and aluminum enclosure. The aluminum option is great if you live near the ocean or gulf because it simply doesn't rust. If you live inland, the steel option will serve you well. Guardian uses a powder coat painting system which keeps the enclosure well protected.