tri-proof light detail: 1)Up to 6,000 hours lifetime 2)UL,CE,GS,EMC,RoHS,ENERGY STAR,ERP,ISO 3) ... efficiency, up to 80% energy saving5)Excellent color rendering, nice light distribution 6)OEM accepted Unique FeatureslTrue replacement for Fluorescent tube ... operating temperaturesl(-20°C to +50°C)lInstant start-up 2012 HOT selling 2*18W straight tri-proof light ZM-F03