The Honeywell UC100E1030 Single Replacement Lamp restores ultraviolet treatment performance in compatible HVAC air purification systems. This replacement UV lamp is used in select Honeywell UV100 air treatment units and produces ultraviolet light that assists in inactivating airborne particles and surface contaminants within the duct system. It operates by fitting into the designated ... https://www.hnkparts.com/honeywell