Lifegard Aquatics introduces the Pro-MAX™ UV Sterilizer , featuring a patent-pending, flow-through design with less restrictive angled inlet and outlet ports requiring less plumbing. This unique design enables easy installation of new or replacement systems as it can be positioned in multiple ways to fit any tight space. Available with 3″ housing in 25, 40, 55, 90 and 120 Watt models and 5″ housing in 55, 90 and 120 Watt sizes. Each Pro-MAX™ features a High Output UV Bulb, Internal Protective Sleeve, and UL Listed Ballast which counts down the number of days until you need to replace the bulb. Maximum Operating Pressure 30 PSI. Specifications - 25 Watts - Inlet/Outlet: 2" slip/2" slip - Dimensions: 24.4" x 4.51" x 9" - UV Output Micro Watts 0.05 - Lamp Life 9000 Hours - Max Flow Rate 1000 GPH - Max Flow Algae Bacterial UVC 30k, 550 GPH - Max Aquarium Size 130 Gallons, Pond 2400 Gallons