Amerimax Home Products 4400 Downspout Filter, Black Flex-grate filters leaves and debris from downspout to keep your drainage system flowing freely Fits 2 in x 2 in, 2 in x 3 in and 3 in x 4 in downspouts Connects to 4 in corrugated or PVC drain pipe Built in connector flexes for easy installation Works great with rain barrels