S&B0 628 FHR T5 Open Type Fluorescent High Bay 6x28w Housing High quality cold-rolled steel sheet Reflector 99.85% high purity anodized aluminium reflector mirror finished (DIN 5036-2) for normal usage. 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.