Includes (2) 18W Incubator LED Clone Lights per box Color Temperature : 9000 Kelvin PPE : 2.6 μmol/J PPF : 46.8 μmol/s Beam Angle : 120º Water resistant housing and connectors 18W per strip (0.15 amps on 120V) Length: 42.75 Inches Daisy chain up to 100 strips on a 20 amp circuit Use two strips per shelf Hang using the zip tie slot for easy installation