Manifold Assembly; Port Size R32 Inlet, R20 Outlet; Length 12.28 Inch; Width 3 Inch; Height 11.41 Inch; Header Pipe Size 1-1/4 Inch Inner Diameter; Number of Ports 4; Number of Valves 1; End Connection Union x Male Threaded; Body Material Brass; Temperature Rating 220 Deg F; Pressure Rating 145 PSI; Applicable Standard ASTM F877, IMC, IRC, UMC, NPC (Canada), NSF-RFH; Maximum Fluid Flow Rate 14 GPM; Includes Balancing Valve; Application Radiant Heating and Cooling System