Pieces Pool Filter Protective Mesh, Replacement Parts, Filter Cartridges, Protective Nets, Replacement Mesh Cover for Swimming Pool. Description: Filtration: Filter cartridges are designed to keep your bath water clean and clear. They are easy to install and maintain, requiring only regular rinsing under a tap. If they remain dirty or discolored after washing, they should be replaced to avoid damaging the filter pump. Material: Unlike other filters made of paper, these filter protective mesh covers are made of non-woven fabric, which is durable and practical. Package Includes: This package comes with two replacement filter cartridges suitable for hot tubs. Versatile: These inflatable pool filter net bags can be used in swimming pools, bathtubs, and spas. Application: Only applicable for inflatable pools produced after 2020. Specifications: Material: Non-woven fabric. Fabric size chart: 10.5cm x 6.8cm / 4.13 x 2.68 inches. Inner diameter: 5.4 cm/2.13 inches. Package includes: 2 filtered protective mesh covers. Note: There may be slight differences of 1-2 cm due to manual measurement.