Designed for commercial and utility-scale applications, the LONGi Solar Ultra 400W delivers 400W of maximum power output with an impressive 23.28% module efficiency. With its exceptional 23.28% efficiency rating, this panel maximizes power density for space-constrained installations. Backed by a comprehensive 25-year warranty, the Ultra 400W is built for decades of reliable energy production. Measuring 1722 x 1134 x 30 mm and weighing 18.1kg, the Ultra 400W is designed for efficient handling and installation.