Maintain sparkling clean and beautifully clear water with the replacement Unicel Filter. Made with spunbonded 100% polyester material this Unicel Filter is durable and effective in capturing the smallest of debris. With replacement cartridges available in a variety of sizes and built to OEM specifications you re sure to get a reliable cartridge that fits your filter perfectly. Use this replacement filter to replace your worn or damaged cartridge or as a back up to maximize the time between filter changes.