The Rain Bird 3500 Series Top-adjust, intermediate-range, geardrive rotor delivers unrivalled convenience, value and performance. With features such as easily removable nozzles and filter screen, reversing full and part circle operation in one unit, dual-action wiper seal, a true 4" pop-up and most importantly Rain Curtain™ Nozzles, it is quite evident why professional contractors worldwide choose Rain Bird’s 3500 Series Rotor.