S&B0-FHR T5 Open Type Fluorescent High Bay Housing High quality cold-rolled steel sheet of thickness 0.6 (T6) or 0.8mm (T8) Reflector 99.85% high purity anodized aluminium reflector with Total Reflectance of 87% (87) mirror finished (DIN 5036-2) for normal usage. Optional: TR=95% (95) for high efficiency purpose Lamp Holder Heavy duty rotary-locked 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 For surface mounted or suspension rod installation. Application Recommended for warehouses , factories , gymnesium , etc.