- 3 in. single-wall internal coupler snaps into the interior corrugations.
- Easy snap connection to perforated drainage pipe
- Best for connecting sections of french drains
- HDPE material
3 in. Corrugated Drain Tile Internal Coupler
This internal coupler is for 3 in. perforated corrugated pipe and snaps on the interior of the drainage pipe.
When to Use an Internal Coupler
If you’re using a perforated pipe for French drain application, you’ll be able to use the internal coupler. The coupler snaps on the inside. It has barbs so once it clicks in, you can’t get it out. This is a forever connection.
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Note: All orders ship within 7 days.