Bathroom Fixtures, Kitchen & Bath Fixtures, Tools & Home Improvement
CAI Corrugate Drain Internal Coupler – Single 3″
$11.98 on Amazon.com (as of October 20, 2026, 12:17 AM EST) View details ↗
Designed for outdoor drainage projects, the CAI Corrugate Drain Internal Coupler delivers a rugged, single‑wall polyethylene construction that resists corrosion and withstands harsh weather conditions. Its universal coupling shape and 3″ size allow seamless connection to standard corrugated or 3″ drain pipes, ensuring a secure, leak‑resistant fit.
Ideal for landscape drainage, rain drain solutions, and exterior installations, this coupler manages water flow and prevents pooling around foundations. Its compact dimensions—6.5 in. long, 4 in. wide, and 4 in. high—make it easy to install in tight spaces, whether you’re working on a new or existing drainage system.
| Pipe Diameter | 3″ |
|---|---|
| Length | 6.5″ |
| Width | 4″ |
| Height | 4″ |
| Material | Polyethylene |
| Application | Landscape and exterior drainage |
What pipe sizes is the CAI Corrugate Drain Internal Coupler compatible with?
It is designed for use with standard 3″ corrugated drain pipe and 3″ drain pipe.
Can this coupler be installed in tight spaces?
Yes, its compact size (6.5″ long, 4″ wide, 4″ high) makes it suitable for tight installation areas.
