A robust round drain with a UV inhibitor to reduce sun damage, this grate is designed with large opening slots for maximum flow while still preventing large debris from entering the drainage system. Precision engineered and manufactured to attach directly to Sewer and Drain Pipe and Fittings, Triple Wall Pipe, and Corrugated Pipe. Easy to use, installs in minutes, and blends well with the landscape. Typical application would be for direct attachment to Drainage Pipe where a catch basin is not appropriate or feasible. Available in 3", 4", and 6" diameters.