Yes,
SprinklerWarehouse.com sells both the doughnuts to protect sprinkler spray heads and rotor heads.
SprinklerWarehouse.com also sales the Institutional spray sprinklers.
To order the doughnuts, please Email me (Steve) at sales@sprinklerwarehouse.com with your request and how many you are interested in. I will reply with the price. We will bee adding the doughnuts to the website to allow direct ordering off the website in April.
