【Compatibility】15-watt replacement bulb with 4-pin base compatible with Black Flag BB-15WHT, BZ-15, BZ-20, BZ-40, BZ-40 DX, Ful 15W-BL U Shaped Twin Tube Light Bulb Fit for Flowtron BK-15D, for Stinger FP15, for TZ15, for BB-15WHT, for T6, T8, T9. The package include 3 15-watt replacement bulb. 【High Quality】The 15-watt u shape bulb with 4 pin base, The working effect of this bulb can reach about 6000 hours (about 4-5 months), so the light is stable and the effect is very good. Can be used for a long time. You can use it many times in your home, garden, restaurant, etc. 【Easy Installation】Please unplug it first, let all the electricity drain, twist and remove the tray, then remove the screws and bulb, last insert the replacement bulb. (Note:The light tube is fragile, please handle with care.) 【Note】The light tube is fragile. If the light tube is damaged or cannot work due to transportation, you can apply for a replacement. If you have other problems, please do not hesitate to contact us! 【After-Sales Service】 If you have any questions about the quality and use of the indoor outdoor 15w u shape light bulbs, you can contact us at any time, and we will reply within 24 hours. GRONGU 15-Watt Replacement Bulb with 4-Pin Base, Ful 15W-BL U Shaped Twin Tube Light Bulb Compatibility 15-watt replacement bulb with 4-pin base compatible with Black Flag BB-15WHT, BZ-15, BZ-20, BZ-40, BZ-40 DX, Ful 15W-BL U Shaped Twin Tube Light Bulb Fit for Flowtron BK-15D, for Stinger FP15, for TZ15, for BB-15WHT, for T6, T8, T9. Wide Range of Use Kitchen Bedroom Restaurant Outdoor Function Can be used for a long time It is recommended to replace the lamp every 6000 hours. (approximately every 4-5 months) Package Include 3 × 15-Watt Replacement Bulb 4 pin base 15-Watt U shape bulb The light is stable and long-lasting Note: Please confirm the size and matching model of the lamp before purchasing. Easy Installation 1.Please unplug it first, let all the electricity drain 2.Twist and remove the tray 3.Then remove the screws and bulb 4.Last insert the replacement bulb Note: The light tube is fragile, please handle with care.