Max.power         cells                  weight (kg)          simension(mm)
20w       4X9(as photo  showing)     2.6               642x300x30                               40w         4x9                                 4.5                     642x541x35   45w         4x9                                4.5                      642x541x35    80w         4x9                               8.4                      1195x541x35     85w         4x9                                8.4                    1195x541x35 90w         4x9                                8.4                     1195x541x35 160w        6x12                           16.5                   1580x808x35 170w       6x12                           16.5                    1580x808x35 180w       6x12                           16.5                   1580x808x35  40w        4x9                              3.8                    614.2x528.3x35 65w          2x18                           6.2                   1475x342x40 80w          4x9                            7.5                  1201.4x528.3x35
85w          4x9                             7.5                   1201.4x528.3x35                          Features: nominal 6v DC for stand output outstanding low-light performance heavy-duty   anodized frames high transparent low-iron, tempered glass rugged design to withstand high wind pressure,hail and snow load  aesthtic appearance