Rain Bird's 22SA rotary sprinklers provide highly uniform water distribution. The secret is in the nozzle's rotary multi-stream action. The water delivery is gentle enough for newly seeded areas and hillsides， yet covers more area than standard pop-up sprays. The extended throw also allows you to use fewer heads per zone to reduce system complexity. And the 22SA nozzle's water droplets are larger than traditional sprinkler droplets， resisting windblown overspray. The 22SA is easy to adjust: simply use a standard slotted screwdriver to adjust the throw distance from 17 ft. to 24 ft. Other features include a 4 in. pop-up height， a protected closed-case design that makes these sprinklers ideal for creeping grasses， sandy soil and other harsh surroundings and a water-lubricated rotating stream operation that's quiet and maintenance-free.Find the POPUP ROTOR FC 17-24' 4 at Ace.