Specifications: Length: 14 3/4"; Outside Diameter: 5 5/16"; Top Opening: 2 1/8"; Bottom Opening: 2 1/8"; Filtration Area: 75 Sq.Ft. Capable of capturing particles as tiny as 10 to 15 microns, including hair, leaves, dust, sediment, sand, and other fine particles. Effortless cleaning and maintenance. When the cartridges get dirty, they can easily be removed and rinsed off with a hose, or soaked in a cleaning solution to eliminate debris. Together break-resistant end caps with a solid core support, there’s no need to worry about cracks during normal use as its enhanced structural integrity. Use of advanced trilobal fibers, developed with state-of-the-art technology, contribute to a higher capacity compared to standard point-bond fabric without pressure drops. Compatible with Aladdin 17540, Baleen AK-40081, Darlly 50651, Excel Filters XLS-512, Filbur FC-2971M, FC-2971, Leisure Bay S2/GS Spa, Maax Spas 107092, Pentair Pool Products Rainbow Plastics R173600, Pleatco PLBS75-M, PLBS75, Pure N Clean PC-2971, Rec Warehouse 303433, Spa-Daddy SD-00242, Unicel C-5374RA, C-5374AM, C-5374, Waterway Plastics 817-0015, Waterway Plastics 75 sq.ft. top load. Suitable for pools/spas by: Cal Spas, California Cooperage, Clearwater Spas, Icon Spas, Leisure Bay Manufacturing, Maax Spas of AZ, Pentair Pool Products Rainbow Plastics, Rec Warehouse, Waterway Plastics. SPA FILTER