Field Controls 46632513 UVC Germicidal replacement twin lamp designed for Field Controls UV-Aire portable and in-duct model UV-13FM. UV-Aire Mfg reference P/N 46630300. Lamp measures 13" from top of lamp to pins.
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.