3" Flange, 5 Psi Worker & Monitor Double Cut Governer Gas Regulator, Inlet Filter, 6" - 14" W.C. Black Spring With 7" W.C. Set Point, Integral Vent Limiter, Positive Dead-End Lockup, Max Inlet Pressures: 5 Psi Csa. 7 Psi Non-Csa.