Fluorescent Lamp T5 High Output 4 ft F54/54W/865/6500ºK - Blue: J

24 watt = 2, 000 Lumens each 39 watt = 3, 300 Lumens each 54 watt = 5, 000 Lumens each Use only these High Output (H.O.) lamps in Tek-Lightâ„¢ T5, Sun Blaze®, Inner Sunâ„¢, Spectra Max, Ready Fitâ„¢ & New Wave® T5 fixtures. Lamps that are not marked H.O. will have significantly less output.