Bryant Carrier UVLXXRPL1020 HVAC 27 Watt Premium Compatible Ultraviolet UV Lamp Bulb 4-pin Base 21" Effective Hours Rating: 10,000hrs - Ultraviolet Germicidal Light Bulb Fits UVLBB1LP1020, UVLCC1LP1020 / UVBB1LP1020A, UVCC1LP1020A UVLXXRPL1020 - Evolution & Infinity UV systems From Bryant and Carrier. Bulb Type: T5 Style Quartz Glass Base Type: 4pins ONE END