Description of this kind of 250W high bay light/lamp:Brief SpecificationsWattage: 150W, 200W, 250WColor Temperature: 2700K, 3500K, 5000K, 6500KRa: >80IP IP54Lifespan 60, 000h~100, 000hGlare Flicker NoneOperating Voltage: AC 110V~ 277VLumen Efficicacy: 150 Plm/WLuminarie Dimension(L*H): Φ 410xH615 or Φ 495xH685 or Φ 570xH685(22")Ambient Temperature: -40° C to 70° CFeatures of this kind of 250W high bay light/lamp:1. Aluminum electrical box, electrostatic spray treatment with anti-corrosion.2. High purity anodized aluminum reflector, adjustable wide and narrow optical design.3. High-strength silicone seals, high-temperature resistant tempered glass, high dust and waterproof rating.4. Housing completely sealed with heat proof silicon gasket for ensuring high performance of protection against moisture and contaminant.5. High bay fitting/light can be installed with hook, boom, or sling chain.6. PC cover7. No glare and no flicke with our high bay lighting8. Saving 50-90% compared with traditional light sources9. Power sources: 100W, 150W, 200W induction light