Reusable, washable pool filter sponge that replaces paper cartridges and lowers long‑term maintenance costs Key benefits Reusable replacement for paper filter cartridges: wash and reinstall the foam sponge multiple times to reduce ongoing cartridge purchases and landfill waste. Costefficient and durable: longlasting ‑density Finecell foam maintains filtration performance through repeated rinsing without losing effectiveness. Prevents clogs and preserves flow: fine‑pore sponge captures debris and contaminants to reduce clogging and help maintain consistent water circulation in your pool. Features and specifications Compatible models: designed to paper cartridges for Type I, Type II, Type VI, and Type D filters. Center hole options: available with 28 mm or 52 mm center hole choices. Supplied dimensions (outer diameter x height, as provided): Type I: 346x307in and 374x425in Type II: 527x409in Type VI: 314x409in Type D: dimensions supplied to suit applications where the center hole must be drilled; compatible with Type II and Type VI requirements as indicated. Material: ‑density Finecell foam engineered to trap fine debris while allowing steady water flow. Performance and maintenance Easy to clean: simply rinse the sponge with a hose during routine maintenance; allow to dry if storing between seasons. Maintains filtration efficiency after multiple washes, reducing the frequency and cost of cartridge replacements. Designed for straightforward removal and reinstalling in compatible filter housings. Practical use scenarios Home backyard pool: disposable paper cartridges with the washable foam to lower yearly maintenance costs and simplify monthly cleaning. Seasonal pool opening and closing: rinse and inspect the sponge at each season change to extend service life and ensure reliable filtration when reopening the pool. Community or multi‑use pools with frequent turnover: use reusable sponges to cut operating costs and reduce waste from disposable cartridges. What to check before buying Confirm your filter model is Type I, Type II, Type VI, or Type D and verify required center hole size (28 mm or 52 mm). Match the listed dimensions for the correct Type (Type I, Type II, Type VI) or choose a Type D unit if your installation requires drilling the center hole. This washable foam filter provides a durable, cost‑saving alternative to paper cartridges while maintaining reliable filtration and water flow for the listed filter Types and sizes.