LSE Lighting compatible LT-50 UV Bulb for use with PCO2450 Air Purifer Brand: LSE Lighting Length: 18" Base Type: 4pin This UV replacement lamp by (LSE Lighting Brand) is fully compatible for use with GeneralAire LT-50 PCO2450 Air Purifer System. All UV lamps listed are compatible brand (LSE Lighting) UV products. We do not sell GeneralAire brand UV lamps. All GeneralAire brand names, trademarks and logos are property of GeneralAire.