Triple layer BSF, junction box with by-pass diodes - 125W. Anti-reflective coating. Back film reflected light. High-transmittance glass. Static load test 5400 Pa passed with rear protection bar (175W,180W). Max. system voltage 600V. Locking MC4 mm connectors. Conformity with IEC61215 Dimensions 58.9"x26.5"x1.8".