-High efficiency 120-130lm/W -Ceiling light is with AL6063 aluminum housing -Opal or Microprismatic diffuser UGR<16 -100% Direct , 25% indirect& 75% direct -350mm,450mm, 600mm, 900mm, 1200mm option -Color Temperature 3000K 4000K -2/3 CCT Dipswitch adjustment or Tunable white -Indirect and direct light seperated Control -Multiple Color finishes available -multiple installation ways available as surface mounted, recessed, Suspended -5 Year Warranty