HQST 150 Watt 12 Volt Monocrystalline Solar Panel (2 Pieces) Advanced encapsulation material with multi-layered sheet laminations to enhance cell performance and provide a long service life. IP65 rated junction box provides complete protection against environmental particles and low pressure water jets. Bypass diodes minimize power drop caused by shade and ensure excellent performance in low-light environments. Corrosion-resistant aluminum frame for extended outdoor use, allowing the panels to last for decades. Pre-drilled holes on the back of the panel allow for fast mounting and securing.