Prevent debris from entering and choking up your drain pipes by putting the National Diversified Sales 1200DSG 12" Black Plastic Square Downspout Defender Catch Basin Drain Grate in place. The 12" Downspout Defender Grate has a unique, patented design that captures more stormwater runoff than a traditional drain grate or drain cover. The grate has an angled face that minimizes splashing; water drains through while debris is deflected away and slides down the sloped surface into an easy-to-clean shelf. Made of high-density polyethylene (HDPE) treated with UV inhibitors. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects—or we’ll replace it.