RENOGY 1800W Polycrystalline Cabin Solar Kit: 6 300W Poly Solar Panels (free upgrade to 310W) + 1 Midnite MPPT Controller + 2 Pairs of 40Ft MC4 Adaptor Kits + Combiner Box and 2 Breakers Six Renogy 310Watt Polycrystalline solar panels UL 1703 Certified (Grade A high Efficiency solar panel) ideal for Cabin application One Midnite Classic 200Amp MPPT Charge Controller Two Pairs of 40Ft MC4 Connector Adaptor Kit with MC4 Male and Female Connector MNPV6 Combiner Box and 2 MNEPV12 Breaker Railing is not included