The reflectors are manufactured from frosted anode oxidation aluminum with high quality ballast: long life no noises Voltage:110-220VWatt:3X20WPF:0.6-0.95CTHD:<20%Life spand:30000HRS Unit size:625*595*80MMPcs/ctn:2pcsPacking size:670*190*630mmApproval:CE,EMC,UL,CCC.