[Clearray Bulb] 6472-841 is the pool light bulb for spa hot tub.[Compatibility] This light bulb fits for Jacuzzi spas series J-200, J-300, J-400, J-LX, J-LXL & 2012+ Sundance spas tub. The hot tub light bulb also replace part numbers 6472-841,6472-857, 94-1552, 3LRK, UVL-3LRK-1.[How to Install] Installing clearray light bulbs only takes a few minutes, simply follow the steps to replace your bathtub light bulb: Remove the protective covering. Unplug the socket. Place the bulb into the socket. Connect the socket. Restore power and test the bulb.[Excellent Quality] High-quality lamp bulbs which have high energy. Durable silicon glass material for long lifespan. The glass of this material has high stability and electrical insulation. Extreme transparency, its transmission rate reached more than 90% making the spa clear ray bulb more effective in cleaning water.[Please Noted] When taking out the bulb pull the rubber lid not the connecting wire If you have any questions about tub replacement bulbs. Please feel free to consult us any question at anytime we will reply to you within 24hrs.