It is mainly used to prevent the leaves.Etc from falling down into the ditch. 1,reinforcement net for geomat.2,agricultural netting(anti-bird netting),the oriented size is 1-4cm,prevent all kinds of birds from destroying the agricultural products.3,it has the properties of good flexikility,high tensile strength,aging resistance,anti-errosion,etc Gutter guard mesh:3.8x3.8 mm