Field Controls 46365402replacement 18" Lamp for air purifier model UV-Aire UV-18, UV-18C and UV-18X. Replace lamp once a year to maintain the lamp’s maximum output intensity. Note: A tiny, loose metallic sphere is present inside the UVC lamp but does not indicate a flaw. This is an alloy containing mercury in order to produce mercury vapor, which will then turn into UV-generating ions.
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