Continuous feedback of UV disinfection performance for added peace of mind and NSF validated for flow rates up to 8.9 gpm (34 lpm)NSF 55 Class B Certified version of the D4 UV systemAdds state of the art UV sensor technology to the D4-V unitNote: The D4-V+ replaces the Sterilight SSMV-37, SSMV-39, SCMV-200 and SCMV-320 systems.Features & SpecsDISINFECTION FLOW RATES16mJ/cm2: 8.9 GPM (34 lpm) (2 m3/hr) NSF 55BSPECIFICATIONSDimensions: 20 1/2? x 4? (52 cm x 10 cm)Shipping Weight lbs (kg): 10 lbs (4.5 kg)Connection Size: 3/4? MNPT Power 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