LSE Lighting UV500 UV Duct Bulb – 3 Pack

🟣100% compatible replacement for Lennox / Healthy Climate Y0390, 64X36, UV500, UV523, UVC-24V, YO390 systems. Fits and operates the same as the original blue-tip lamp.🟣Ozone-free 254nm UV-C wavelength ideal for circulating through HVAC duct systems.🟣Standard 4-pin round base with flange, 22-watt output, approx. 16" length—ensuring a flawless fit in duct-mounted UV units.🟣Rated for 12,000 hours (typically 1–2 years). Replace annually for maximum performance and air control effectiveness.🟣Manufactured by LSE Lighting in an EPA Registered Facility (Est. No. 96823-PA-1) for consistent quality and safety.