- Material: This pool filter foam cartridge is made from high-quality sponge material that efficiently traps dirt and particles, helping keep your pool water clear and creating a clean, safe swimming environment for you and your family. - Reusable and washable design: Unlike traditional paper filters that require weekly replacement, this blue foam filter can be thoroughly washed and reused multiple times, making it a cost-effective choice for pool maintenance while reducing waste. - Compatible with Type II systems: Specifically designed for Type II filter systems and for 58094 models, this replacement cartridge fits 530-800 GPH pumps and delivers reliable filtration for your pool setup. - Cost-effective solution: While the initial investment may be higher than paper cartridges, this foam filter lasts about 2 months before replacement is needed, providing long-term savings on pool maintenance. Use scenarios: - Regular household pool maintenance with a Type II system in a small to mid-size pool, providing clear water with everyday use. - Upgrading from disposable paper filters to a reusable foam cartridge to reduce waste and lower ongoing filter costs. - Seasonal or after heavy use (such as parties, windy days, or rain) where you can wash and reinsert the cartridge to restore clarity without frequent replacements.