Wide Application: The drainage ditch protection device can filter fallen leaves, weeds, dust, debris or other pollutants to protect the downspout and drainage ditch from being blocked. When used, the downpipe will not be blocked, and you also won't take a lot of time and effort to plug the downpipe. The drain protection filter can collect rainwater more efficiently by improving water flow and filtering out certain pollutants; the leaf filter is suitable for most sizes of traditional downpipes, the height is 17cm/6.69in, the size is adjustable, and the diameter is 45-85mm/1.77-3.35in , each package is equipped with 4 metal drainage ditch guards, enough to meet your needs. Material: made of high quality stainless steel, not easy to rust, with shiny silver appearance, very beautiful. The material and structure are strong enough to withstand all kinds of weather and sunlight, can be used for a long time.