Flexible Coupling 6"x3" BLACK Fernco (79050) with SS Heavy Duty Clamps

Fernco Flexible Coupling 5.61" x 3.53" BLACK (1006-43) with SS Heavy Duty Clamps

• Connects Concrete to Cast Iron, Plastic, Copper, Steel or Lead.
• Seals against infiltration/exfiltration.
• Leak proof, root proof.
• Stainless steel clamps.
• Inside Diameter 1: 3.53".
• Inside Diameter 2: 5.61".
• Length: 3.9".
• Conforms to ASTM D 5926, C 1173 CSA B602 and UPC Approved. 300 stainless steel clamps are corrosion-resistant, rustproof and make installing quick and easy with just a screwdriver, nut driver or torque wrench.

Flexible couplings are not made specifically for the radon industry. These are "repair" couplings widely used in the plumbing and sewage trades to adapt to different types and sizes of piping. When using this flex coupling with our 6" fans, you may find that be a bit snug, but they do fit and they are all that is available for making these connections.