The cast iron trench drain grate (garbage screen) is a type of mesh screen, which is similar to steel grating plate. The cast iron grates are the long lasting solution for the drainage problems. Cast iron foundry grates offer contractors a level of design freedom not found with modular drainage systems. It has a wide range of applications. Whether you need a bolt-down utility grate for your high traffic project or decorative cast iron grates for a city streetscape, you’ll find it here.