Rain Bird 15CSTC1 Center Strip Pattern Matched Precipitation Rate Spray Nozzle, Adjustable 3' x 20' to 4' x 30' Spray Distance. Trusted for decades, Rain Bird MPR Nozzles feature Matched Precipitation Rate watering distribution technology. Nozzles with varying arcs and radii can be mixed on the same zone regardless of spray adjustment and still maintain even water distribution rates. MPR nozzles are designed to provide uniform coverage, ensuring that your lawn is green throughout. Non-corrosive plastic and stainless steel construction for long life. Stainless steel adjustment screw adjusts spray distance from 3' x 20' to 4' x 30. Nozzle sprays a center strip pattern at a 30° trajectory and fits all Rain Bird pop-up sprinklers and shrub adapters. Mesh filter screen protects from clogging and maintains precise radius adjustment. Rain Bird “The Intelligent Use of Water".