GermGuardian Genuine UV-C Air Purifier Replacement Bulb AC4100, AC4175 & AC4150 Air Purifiers, LB4100

This is a GENUINE GermGuardian UV-C bulb for GermGuardian Air Purifier Models AC4100, AC4150BLCA and AC4150PCA | IMPORTANT: Use GENUINE Guardian Technologies replacement parts to maintain product performance. | 2 Watt bulb with the power of UV-C for your Air Purifier units. Benefits of this can be found under the Air Purifier description. | This bulb needs to be replaced every 10-12 months depending on use and environmental factors.