UTL 330 Watt solar panel is an extremely efficient 72 cell (12 x 6) polycrystalline solar panel. This solar panel is more than 17% efficient with -40 °C to 80 °C operating temperature, 77% fill factor, and excellent low light irradiance performance. This solar panel also has 3.2 mm toughened textured glass, IP65, 3 diode front side junction box for MC4 compatible cable connector.