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 8' distance 0 to 360 degree Adjustable pattern Heavy duty design for longest life Pressure Regulator helps stop wasteful misting #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