5 Watt UVC Bulb Replacement for Germguardian LB4000; Base Type: G23 2pin;
Compatible with GermGuardian Air Purifier Models AC4300BTPCA, AC4300WPT,
AC4900, AC4825, AC4825W, AC4850PT, AC5300B, AC5350B, AC5350W, AC5900, CDAP4500
and CDAP5500.
UV-C light bulb is used to kill or inactivate microorganisms such as mold
spores, airborne bacteria or viruses. The light is the natural and
chemicals-free way to fight germs. It doesn't produce the environmentally
damaging materials like ozone.
This bulb needs to be replaced every 10 to 12 months depending on use and
environmental factors.