6 Pack Type VI Filter Replacement for: Coleman SaluSpa Bestway Lay-Z-Spa Intex and other inflatable hot tubs. Coleman SaluSpa Model#: 90424E 58239 90352E 58323 58323E. Type VI hot tub filter is featured with upgraded trilobal fabric they are air permeability water permeability and penetrating property allowing water through while stopping debris. This is the reason why they are stable reliable and strong. Tips: If you don t know the replacement part number you can measure the size of your existing one (+/- 1/16 inch). For maximum efficiency replace cartridges every two weeks. Specifications: Outside Ring Diameter: 4-3/16 Height: 3-1/8 Inner Hole: 2 Package Include: 6-pack Installation: Insert Area of Filtration: ３ sq ft Pleat Count: 70 Media: 2.5 oz Key Features: