This S463RL Replacement Lamp is designed to provide reliable and efficient performance for your UV water purification system helping ensure clean and safe water for everyday use. Emitting a precise 254nm ultraviolet wavelength it supports effective disinfection and consistent water treatment results while the Well-Made quartz glass construction ensures excellent UV transmission and long-lasting durability under continuous operation. Featuring a 4-pin base design this S463RL replacement bulb allows for quick and easy installation with a seHelps Support fit making it a direct replacement without complicated setup. It delivers stable performance with a long service life of up to 12 000 hours helping reduce replacement frequency and maintain consistent system efficiency over time and for optimal purification results annual replacement is recommended. This 4-pack S463RL replacement lamp set includes 8 O-rings for added convenience during installati