Volca Spares Hot Tub Filter Cartridge Size VI for Bestway, Lay-Z-Spa, Coleman SaluSpa 90352E 58323, 6 PackBrand: Volca Spares Color: White Features: Provides clean and clear water by introducing our Type VI filter cartridge D. I. M: 4. 1 x 3. 1", for all spa models using Type VI filters, compatible with Bestway, Lay Z Spa, Coleman and SaluSpa Premium quality dacron fabric collects hair, leaves, dust, sediment, sand, etc; easy to clean and replace For best results, clean filter cartridges often and replace every few weeks if used heavily 100% satisfaction