Coupling, Nominal Size A: 4 inch, Nominal Size B: 4 inch, Asbestos Cement/Ductile Iron x Cast Iron/Plastic Connection, Flexible PVC, Pressure Rating: 4.3 psi, Temperature Rating: -30 to 140 Deg F, Standards: ASTM D5926, C1173, CSA B602, 4.40 inch Inner Dia, 4.80 inch Outer Dia, 4 inch Length