Dynatrap® 32050 Replacement UV Fluorescent Bulb for DT2000XL, 6-Watt, 2-PackDynatrap 6 Watt Replacement Ultra Violet Fluorescent Bulbs for the Dynatrap DT2000XL mosquito insect trap. specially designed to produce the correct UV wave length required to maximize the catch rate for mosquitoes and other flying insects. For best performance replace every 3000 hours (4 months). Even if they still light up, they may not be as effective in insect catching rates. 2 Pack 6 Watt Ultra violet fluorescent bulb Fits Dynatrap model DT2000XL