Unicel - 3-1/2 sq. ft. Spa-In-A-Box Replacement Filter Cartridge

Maintain sparkling clean and beautifully clear water with the Unicel Replacement 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. Easy to install, the Unicel Replacement Filter delivers OEM quality performance at a great price.