Enviracaire Replacement UV Bulb for the Enviracaire and Slant Fin

The Enviracaire 3.5 W Germicidal Ultraviolet GTL3 Replacement Bulb is for all Enviracaire Germ Free Humidifiers up to 3.5 gallon capacity. The Enviracaire EUV-13B Humidifier Replacement is a genuine ultraviolet (UV) germicidal bulb that helps to eliminate bacteria growth and contamination. The UV bulb will operate at maximum output for approximately 2,000 hours.The UV bulb will operate at maximum output for approximately 2,000 hours.