Quick view Fernco PVC 4" x 4" Flexible Coupling (AC/DI/Corrugated x CI/Plastic) Compare $8.73 Joins two pieces of pipe Coupling 4.40" x 4.80" 4.02" - 4.53" x 4.53" - 4.92" 5/16" Nut Tighten to 60 lbs. torque Drainage applications ONLY Fernco 4" AC/DI/Corrugated x 4" Cast Iron/PVC Flexible Coupling Data Sheet Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List