Product SPECIFICATIONS REC ALPHA PURE SERIEs > Product SPECIFICATIONS CERTIFICATIONS 1821±2.5 [71.7±0.1] 460 [18.1] 901 [35.5] IEC 61215:2016, IEC 61730:2016, UL 61730 GR GR 153.7 [6.05] 1100 [43.3] GR 11±0.2 [0.43±0.01] 30 [1.2] 132 half-cut REC heterojunction cells with lead-free, gapless technology 6 strings of 22 cells in series 0.13 in (3.