LSE Lighting compatible UV Bulb 22W for Lennox Y0390 UV Air UVC-24V Base Type: 4pin (with retaining ring for mounting), Bulb Type: T5 Style Quartz Glass - Bulb Type: Germicidal UV Tube Light Length: 16" This UV replacement lamp by (LSE Lighting) is 100% compatible with Lennox Y0390 UV Air UVC-24V. Watts: 22W All lamps listed are compatible brand (LSE Lighting) UV products. We do not sell Lennox brand lamps. All Lennox brand names, trademarks and logos are property of Lennox.