The VH410 drinking water system has been designed and tested to ensure quality drinking water is at everyone’s finger tips. Powerful but still compact UV disinfection system designed for the larger home or light commercial application Recommended for flow rates up to 18 gpm (68 lpm) Note: The VH410 replaces the Sterilight S12Q-PA and SC-320 systems.Specifcations304 Stainless Steel Reactors Flow Rate: 18 gpm @ 30mJ/cm2Dimensions: 23 1/2" x 3 1/2" (59.6 cm x 8.9 cm)Max Operating Pressure: 125 psi Inlet/Outlet Port Size: 3/4"- 1" MNPT COMBO (/2B – BSP)Volts: 100-130V/50-60Hz Volts: 230V systems are shipped with 2-prong continental European (CEE-7/7) 2 pin with ground "Schuko" power cord.