SOL 4 - 400 Watt LED Grow Light Industry-leading 100W integrated LED Chips Patent-pending square fusion reflector PAR output matching that of a 400W HPS consuming only 700W Primary Coverage:4' x 4' (122cm x 122cm) Supplemental Coverage:15' x 15' (4.6m x 4.6m) Product Dimensions: 15" x 15" (38cm x 38cm)