General description Our spa filter cartridges are designed to keep your spa water fresh and clear for an extended period. Made from high-quality, odorless ABS materials, these cartridges ensure a natural and healthy spa experience. The multi-layer filtration system effectively removes impurities, maintaining excellent water quality and cleanliness in your bathtub. Technical specifications Material: High-quality ABS Service life: Up to 4 months Recommended replacement frequency: Every 3-4 months Compatibility and accessories Compatible with most spas and hot tubs Works with inflatable spas, walk-in tubs, outdoor pools, soaking tubs, plunge pools, and standard bathtubs Usage Simply place the mineral rod parts into your spa filter or skimmer basket, and they will effectively filter the water without requiring any complicated operations.