Description Rain Bird 1800 series sprays are the world's leading sprays trusted by professionals everywhere. They are built to perform and last for years in all conditions. A heavy duty spring ensures that they retract every time. A patented co-molded wiper seal prevents leaks and ensures no dirt or grit gets inside.PRODUCT DETAIL:4" Pressure Regulating Pop-up Sprinkler Up to 50% Water Savings 1800 Professional Series Up to 15' distance 180 degree Half pattern Heavy duty design for longest life Pressure Regulator helps stop wasteful misting Dual Spray nozzle helps prevent dry spots #1 Best Selling sprinkler in the world 4" pop-up height 1/2" NPT A pressure regulator is required on all sprays sold in the following states; California, Washington, Colorado, Hawaii, Vermont