The D4 is easy to maintain and built to deliver outstanding UV performance.Highly featured whole-home UV disinfection system with graphical interface designed for recommended flow rates up to 12 gpm (45 lpm)Overall foot print is extremely compact due to advanced lamp/chamber technologyNote: The D4 replaces the UV Max C4, C4-V and SV12Q-PA systems.Features & SpecsDISINFECTION FLOW RATES16mJ/cm2: 23 GPM (87 lpm) (5.2 m3/hr)30mJ/cm2: 12 GPM (45 lpm) (2.7 m3/hr)40mJ/cm2: 9 GPM (34 lpm) (2.0 m3/hr)SPECIFICATIONSDimensions: 20 1/2? x 4? (52 cm x 10 cm)Shipping Weight lbs (kg): 10 lbs (4.5 kg)Connection Size: 3/4? MNPTPower Consumption: 50WWarranty: 7-Year Warranty on the Stainless Steel UV Reactor1-Year Warranty on UV lamps, quartz sleeves and sensor5-Year Pro-rated Warranty on all other components