Self-ballasted mogul base LED corn cob lamps are an economical replacement for HID lamps. Type B corn cob lamps bypass the HID ballast to convert old HID fixtures to LED technology. Ideal for indoor high or low bay lighting as well as outdoor parking lot and security lighting. Efficiency up to 150 lumens per watt, 80% energy savings over traditional MH or HPS.Replaces 200-watt metal halide (MH), 54-watt LED Type B corn cob Lamp with 6500 delivered lumens. 4000K-5000K, cULus Listed, FCC Certified, 5-year limited warranty.