LSE Lighting compatible UV Bulb 25W for Use with Lifegard QL and AquaStep Brand: LSE Lighting Wattage: 25W, Length: 17.375" (441.33mm), Base Type: T5FP 4pin Pentair Base Warranty: 1 year [recommend to replace every 12 month] This UV replacement lamp by (LSE Lighting) brand is 100% compatible for use with Lifegard QL and AquaStep Sterilizers. All lamps listed are compatible brand (LSE Lighting) UV products. We do not sell Lifegard Aquatics brand lamps. All Lifegard Aquatics brand names, trademarks and logos are property of Aquatics.