Fernco® Pipe Coupling, Strong Back Flexible, Series: 5002RC, Fitting/Connector Type: Coupling, 4 in Nominal Size, Clay x Cast Iron/Plastic, 4.07 in Length, PVC, -30 To 140 deg F, 4.51 x 5.36 in, Domestic
Designed for resistance to heavy earth loads and shear forces, while providing improved pipe alignment.