* Installation NoteInstalling 2 × 400W solar panels requires 2 sets of mounting feet. (sold separately). • A 23% conversion rate to sunlight. • All-black design that fits any house style. • Built to last with an IP68 waterproof rating. • Fast and Easy Installation. • 10-Year Workmanship Warranty；25-year 80% Power output warranty.. * Excluding charge controller and wire defects. The power output will be measured under standard measurement conditions.* Installation NoteInstalling 2 × 400W solar panels requires 2 sets of mounting feet. (sold separately). • A 23% conversion rate to sunlight. • All-black design that fits any house style. • Built to last with an IP68 waterproof rating. • Fast and Easy Installation. • 10-Year Workmanship Warranty；25-year 80% Power output warranty.. * Excluding charge controller and wire defects. The power output will be measured under standard measurement conditions.