Flex Grate filters leaves and debris from downspouts before it can enter the buried drain pipe and cause backups which can lead to costly water damage. The grate diverts leaves and debris while allowing water to flow through and drain properly. The Flex Grate keeps landscape drainage and rainwater collection systems free of leaves and debris. Flex Grate filters leaves and debris from downspouts before it can enter the buried drain pipeFits 2 In. x 3 in., 3 in. x 4 in.or round downspouts with a male type end to join with a 4 in. corrugated or PVC pipeWorks great with rain barrels and rainwater harvesting systemsPrevents drain pipes from becoming clogged