This is a Genuine GermGuardian UV C bulb for GermGuardian Air Purifier Models AC4300BTPCA, AC4300WPT, AC4900, AC4825, AC4825W, AC4850PT, AC5300B, AC5350B, AC5350W, AC5900, CDAP4500 and CDAP5500 IMPORTANT: Use Genuine Guardian Technologies replacement parts to maintain product performance 5 watt bulb with the power of UV-C This bulb needs to be replaced every 10 to 12 months depending on use and environmental factors
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Item# : SPM13630840117
Model # : LB4000