The Fernco 4 in. x 4 in. PVC Mechanical Flexible Expansion Coupling with Stainless-Steel Clamps allows for thermal expansion and contraction in DWV systems and inside rainwater conductor systems. This 1-piece expansion joint is distortion-free. Incorporates internal stops to provide positive positioning.
- Flexible PVC material provides durability
- Creates a quick, simple and secure connection
- Compatible with cast-iron, plastic, steel, copper and lead pipe materials
- Mechanical connections with corrosion- and rust-resistant stainless-steel clamps
- Allows for thermal expansion and contraction in DWV systems and inside rainwater conductor systems
- Internal stops for positive positioning
- 1-piece, distortion-free design