Mighty Max Battery 100 watt Off Grid Solar Power System - 100w 12v -18v high Efficiency polycrystalline Solar Panel Module Battery Charger for Marine and RV Solar Battery Brand Product MLS-100WP is a 12v 18v 100 watt polycrystaline solar panel Dimensions: 40 inches x 27 inches x 1.40 inches. Pre drilled diodes in junction box and a pair of 35 inch cables with MC4 connectors already attached to the panel High efficiency solar cells based on innovative photovoltaic technology Strong aluminum frame manufactured to withstand a heavier snow load and high wind pressures, passing a snow load of 5400Pa. Pre drilled holes on the back of the panel for fast mounting and securing