BTM-T5 T5 Batten Type Luminaire Housing High quality cold-rolled steel housing of thickness 0.4 (T4) ,0.5 (T5) or 0.6mm (T6) Lamp Holder Heavy duty rotary-locked type type (G5)lamp holder (TIS.344-1987 Standard) Wire Cable THW 1.0 sq.mm. 70'C (TIS.11-1988 Standard). Optional: 105'C 18AWG UL Standard. IP Rating IP20 Installation suitable for general purpose with high efficiency requirement