Replacement filter cartridge for pool pumps, type 4, with a structure made of plastic material and filter parts made of paper material, with antibacterial and anti-microbial properties. It can be used as a replacement filter for pool pumps, which operate with a voltage of 220-240 V and filtration capacity of 7949-9463 l/h, which are suitable for filter cartridges of type 4. It is used for cleaning and circulating the water in the pool, while eliminating dust, dirt and bacteria. It can be easily cleaned with water to remove dirt that has been accumulated during use. It is recommended that the filter is replaced every 2 to 3 weeks.