The 4 in. External Coupler joins 2 piece lengths of 4 in. single wall corrugated polyethylene drainage pipe in a straight line. The External Coupler's inner tabs snap quickly and easily into pipe corrugations for a tight fit. The high-density polyethylene material resists corrosion and abrasion, providing added durability.

4 in. External Coupler joins 2 piece lengths of 4 in. single wall corrugated polyethylene drainage pipe in a straight line
External Coupler's inner tabs snap quickly and easily into pipe corrugations for a tight fit
High-density material resists corrosion and abrasion
Coupler snaps over ends of pipe for a secure joint