Aquatic Pool Company APC APCC7285 100 Sq. Ft. Filter CartridgeThe Filbur Pool and Spa filters are made of Reemay spunbound polyester pleated filter media with thermally bonded polyurethane caps and punched PVC pipe cores ensuring durability and consistent flow. All Filbur Pool & Spa Filters also feature technology, or Microban Technology, which prevents microbes, such as bacteria, mold, fungi, and mildew from growing or reproducing. Microban Technology is becoming an industry standard and is featured in all Filbur Brand Pool & Spa filters.The Filbur FC-2965 is compatible with hot tub filters made by Leisure Bay, Rec Warehouse, Clearwater Pool, Waterway Plastics and others. Original Manufacturer part number FC-2965, 8170100.