I don't believe they came with a grate. I think it may have been added. My has no grate. But I know some people put a sink strainer on the drain to keep things from going in the drain and plugging it. I will most likely add one someday. But I will not secure it so it can be removed whenever needed. You may also want to pass something flexible through the drain hose or remove it and inspect it to be sure there is nothing plugging the hose.