This C4000/5K/LEDG2 corn cob-shaped LED light bulb from Feit Electric provides maximum illumination for large rooms, barns, or anywhere you need more light. LED technology puts out and ultra-bright 4000 Lumens using just 35-Watt up to 88% better than equivalent 300-Watt incandescent. These bulbs have an average life of 35000-hours/32-years, are ROHS compliant and 100% Mercury-free. The LED light bulb has the voltage working range 120-277V and can replace 35W or 50W High Pressure Sodium HID light bulb. The LED light has internal driver and doesnt need ballast. Rewiring to bypass the existing fixture ballast is required. Replace your existing High Pressure Sodium HID light bulb and enjoy the LED light energy saving, instant on to full brightness ,virtually no maintenance and long lifetime today.