COB Bulkhead LED High Bay Lights are a new product to market . As we are using samsung SMD3030 and Bridgelux COB 45mil,Website:http://www.topololighting.com, MEANWELL LED Driver, 5 years warranty, the cost are much lower. PF>0.95, CRI>80. Professional design for Heat dissipation module structure, beautiful Appearance and contains the vents, internal & external ventilation, every fin form left to right pass through convection channel,make 3D three-dimensional heat dissipating, maximum for heat dissipation. LED TECHNICAL DATA Typical Luminous Flu&Efficience @350mA; •130lm@25°C Max Junction Temperature: •150℃ Color Temperature: 3500K-6500K  LED life Cycle •50,000 hrs. LUMINAIRE TECHNICAL DATA LED light source  4xCOB-10C6b Bridgelux(250W)  4xCOB-10C7b Bridgelux(300W)  Housing Material : •Aluminum profiles withdurable polyester powder coating  Operating Temperature : •-30C~+45C Luminous Flux : 250W-24550 lm  300W-29500 lm  Power Dirver: AC:100~295Vac 50/60Hz  Classification : Protection: •Built-in external SPD  •Net Weight: •250/300W: 11kg COMPLIANCE STANDARD Driver: ■UL/CUL,CE,EN55015,EN61000,EN61457 Luminaire: ■LM79,EN 60598-1 ,EN60598-2-3 , EN62471,EN62493,EN61000-3,EN61547 APPLICATION Manufactueing Facilities  Warehouses  Retail/Big box  Indoor Gymasiums  Athletic Facilities DIMENSIONS Code Power 0*H(mm) S300HB-250 250W 568*507 S300HB-300 300W 568*557