All multi-purpose connectors, most commonly the 12009 and the 1200M, can be used in a variety of combinations using standard 3-inch PVC or ABS fittings.
They can be used as bottom outlets.
An inspection port can be added to the top, allowing visual monitoring of the water flow.
A riser can be installed between a deeper transport pipe and this fitting.
They can be joined together allowing for multiple lifts of Multi-Flow in a single trench.
12-inch connectors
Multi-Flow connectors allow for extensive flexibility in drainage system design.