Wall Hydrant, Inlet Size 3/4 in FNPT, Wall Thickness 8 in, Recommended Wall Opening 5-1/2 in x 6-1/2 in, Length 8 3/8 in, Includes Key, Vacuum Breaker, Handle Type Key, Casing Material Polished Brass, Outlet Size 3/4 in Hose, Max. Pressure 125 psi, Max. Temp. 120 Degrees F, Standards ASSE, GOVERNMENT SPEC WW-P-541b, IAPMO