4" 1800 professional series pressure regulating (PRS) pop-up sprinkler. 1/2" inlet, with a 360 degree full circle pattern, up to 15' spray. Pop up spray head, with patented "dual spray" nozzle for close in watering providing the most efficient uniform water coverage to help eliminate brown spots. Features include: patented pressure activated co-molded wiper seal, stainless steel reduction screw, removable grit filter, stainless steel retractable spring and easy nozzle alignment.