Upgrade your spa and hot tub filtration system with this 4 pack of Type VI Spa and Hot Tub Replacement Filter Cartridges from Ying-ti. Designed to fit round-shaped filters, these cartridges are compatible with 2 Coleman SaluSpa filters, 3 Intex replacement filters, and 1 Bestway filter. Made of durable plastic and lined with polyester, these filters are easy to install and washable. They are suitable for use with fresh water and are designed to remove impurities effectively. Get your hands on these high-quality filters to ensure that your spa and hot tub stay clean and clear.