The Spray Donut 3.75 lbs Concrete Full Circle is an essential solution for safeguarding backflow preventers in irrigation systems. Crafted from durable concrete, this full-circle spray donut provides a stable and reliable protective barrier around your backflow preventer. It ensures the proper functioning of your irrigation system by preventing debris and damage. With its easy installation and long-lasting durability, it’s ideal for both residential and commercial irrigation systems.