All Toro® landscape dripline uses a large double-outlet cylindrical emitter, which is much more tolerant of debris compared to the other market leaders, most of whom use a compact singleoutlet emitter. While filtration is always recommended for any drip irrigation installation, filters only protect the incoming water from the valve connection. In the event of a damaged line at any point from the filter on down, or any other possible point of entry into the system for debris, Toro outperforms the competition and consistently keeps on flowing.