- For Trench Drain TR1.- Accepts 4" SDR35 pipe; 4" 2729 pipe; 4" corrugated pipe when used with an MF-4 pipe connector.
- For Trench Drain TR1.
- Accepts 4" SDR35 pipe; 4" 2729 pipe; 4" corrugated pipe when used with an MF-4 pipe connector.