Tiantech Mono Perc Cell 520W 525W 530W 535W 540W 545W 550W Solar Panels with half cut manufacturing Module No. JH(520-550)-144M Cells Type Mono 182x91mm No. of Cells 144 pcs (6x24) Panel Efficiency: up to 21.28% Panel Dimenstion (LxWxT) 2279x1134x35mm Weight 29kg Packing 31pcs/pallet 620pcs/40HQ