LSE Lighting Replacement UV Bulb Lamp for UVLB-1X APUV-12 Systems Brand: LSE Lighting - Professional Ultraviolet Lighting Brand SuperLIFE - 10,000hrs - Super Quartz glass UV UltraViolet Compatible UV Lamp for APUV-12 and UVLB-1X Models Length: 31.88" - 4 Pin Base T5 (4 pins on ONE END) Compatible Reference for: APUV12, 12, UVLB-1X