For Bestway Filter Cartridge Size 6 - 58323 Pool Filter Cartridge Height 78 mm (3.1 inches), outer diameter 105 mm (4.1 inches), inner diameter 52 mm (2 inches) for Bestway VI Filter Size 6. Please confirm your pump model before purchasing. The opening is cast, with high strength, thickened filter membrane, and stronger suction. High-quality and durable polyester paper can accommodate many small items. In addition, it is easy to clean and maintain, so the spa filter can be reused. The spa filter is made of polyester paper, which is easy to clean and durable. Dirt can be easily washed off. The pool filter cartridge prevents secondary pollution. Removes debris from pools and hot tubs to keep water clean using less water. The pool filter element can be disassembled and cleaned. It is recommended to do this every two weeks to maintain the best pool cleaning effect. Equipped with a long filter cloth that maintains its strength even when loaded with sediment, as well as lower porosity and