Gutter filter cover: contains 4 adjustable metal drain filter screens, the size is 17*8CM, it can be cut into the drain size that best suits your needs, and it is packed in a box. Scope: suitable for drainage ditches, eaves, underground ditches, sewers, etc., to prevent clogging of flowers, leaves, silt and other debris. Save yourself the trouble of unclogging drains. Adjustable Size: Our aluminum drain strainer can be easily bent to fit your drain system. It is suitable for conventional sewer pipes of most sizes and can also be cut to any length. Installation is simple: installing the downspout filter requires no tools, just adjust the diameter of the filter to be slightly smaller than the diameter of the water pipe, then install install it and fix it. Durable material: The gutter filter is made of high quality aluminum, sturdy and durable, not easy to rust even in winter, snow, hail, high temperature and other bad weather.