The **Unicel** Swimming Pool Filter is made from heavy duty polyester and is designed to last far longer than cheaper alternatives while having more pleats to improve filtering capacity. *Unicel* filters are made in the USA for the highest possible quality allowing you to buy with confidence. Made in the USA!! Top quality dependable and durable; these are a few of the reasons why Unicel leads the industry in swimming pool filter replacement cartridges. Unicel filters use a unique synthetic fiber filter media specially designed for the pool and spa industry creating exceptional dirt catching ability. Easy to clean and easy to replace make Unicel brand filters a great option for your pool or spa.