The Advanced Drainage Systems 4" internal coupler joins two pieces of 4" single wall corrugated drain pipe with a secure, snap-in connection. Made from durable polyethylene rated for 150 deg F, this coupler installs internally by simply snapping it inside the pipe ends - no tools or adhesive needed.

• 4" size for single wall corrugated drain pipe
• Polyethylene construction rated to 150 deg F
• Snaps inside pipe ends for a secure connection
• No tools or adhesive required for installation
• 6.1" coupler length