General description The Replacement Filter for MSpa FD2089 is designed for use in inflatable swimming pools and spas, providing efficient filtration for both domestic and industrial applications. This pack includes four cartridge filters, ensuring you have ample replacements for optimal performance. Technical specifications External diameter: 110 mm / 4.33 in Total height: 86 mm / 3.38 in Product weight: 549 grams Packaging size: 21.69 x 16.99 x 11 cm Usage It is recommended to replace the filter every 3 to 6 months for optimal performance.