The BL368 15 Watt 11″ T5 Replacement UV Bulb single bulb replacements for the Mergence fly control system. Comes in shatterproof and non shatterproof models. Sylvania brand T5 15 watt BL368 UV bulbs feature the newest technology in ultraviolet lamps. The bulb lasts significantly longer with less dimming and is more attractive to flies.Recent improvements in Phosphor technology …