1Used to protect shrimp and baby fish from being sucked into filters. 2Adopt 304 stainless steel material, high hardness, corrosion resistance, uniform aperture, flat mesh surface. 3This screen mesh is small, can avoid inhalation tiny and small shrimp. It can prevent inhalation of large debris blocking filtration system. 4Suitable for aquariums, fish pond, aquariums purifiers and other related fields. 5Used to replace the inlet filter casing of the external filter cartridge or waterfall filter.