Model NO.: STP210-18/Ud, STP205-18/Ud Material: Polycrystalline Silicon Solar Cell: Polycrystalline 156*156 Mm(6 Inches) No. of Cells: 54(6*9) Dimensions: 1482*992*35 Mm(58.3*39.1*1.4 Inches) Weight: 16.8 Kgs(37.0 Lbs. )