4"X3" Corex External Coupling

Manufacturer Part

Accuracy of the images may vary. Refer to the specifications table to ensure precision.

Advanced Drainage Systems is the world’s largest producer of corrugated HDPE pipe and related drainage products. ADS serves the storm and waste water industry through a global network of 56 domestic and international manufacturing plants and 27 distribution centers. In addition to its flagship N-12 pipe, the company offers a complete line of fittings and other accessories including, Nyloplast drainage structures, and various geotextiles. This 4 in. x 3 in. Polyethylene Barb x Female Reducer Coupling is ideal for residential drainage applications. The coupling snaps onto corrugated pipe for easy installation (pipe not included).


  • Polyethylene construction
  • Use to join 3 in. corrugated HDPE pipe to 4 in. pipe (pipe not included)
  • Use for residential drainage applications
  • Corex coupling
  • Snaps on for a quick connection
  • Strong, durable material resists corrosion and abrasion
  • 1-piece molded design helps to prevent leakage at joints
Key Specs
Length 10.5"
Width 3"
Height 6"
Manufacturer ADS
Manufacturer Part Number 0314AA
Shipping Height 5.1"
Shipping Length 10.5"
Shipping Weight 5lbs
Shipping Width 3"
Ship Class UPS