This I-beam, LED, high bay fixture has 18,000 lumens, a voltage of 347-480, and a 100,000-hour life. It measures 45 1/2 length x 11 11/16 width x 3 5/8 inches height and has 103 lumens per watt. It can be mounted between 15 and 40 feet and has a space to mounting height ratio of 1 1/4:1. This fixture has four light bars with a colour temperature of 3,000 K.