Taco® Comfort Solutions™, i125T4R-1, Mixing Valves, Series: I Series, 1 to 1/4 in Nominal, Threaded End Style, 300 psi Pressure, 20 to 240 deg F at 135 deg ambient, 9.3 Cv Flow, Media: Water/Glycol, Outdoor Reset Actuator, 3-3/8 in Inlet to Outlet Length, 4-5/16 in H x 2-3/8 in W x 3-5/16 in D Dimensions