The Darlly 50251 filter cartridge is made for compatible filtration systems requiring 25 square feet of media with 2-3/8 inch top and bottom openings. Its 5 inch diameter and 13-5/16 inch length make it a compact but capable replacement for systems that rely on this exact combination of end dimensions and body size.A properly matched cartridge helps preserve the intended fit inside the housing while restoring the filter’s ability to capture suspended debris effectively. This is especially important in smaller systems where there is less room for tolerance and dimensional mismatches can create installation or performance issues. With matching top and bottom openings, this model also supports simpler replacement when the original dimensions are known.The Darlly 50251 is a reliable option for buyers who need a 25 square foot cartridge with clearly defined dimensions and a straightforward fit profile for compatible filtration systems. Darlly replacement filter cartridge 25 square feet of filtration area 2-3/8 inch top and bottom openings 5 inch diameter x 13-5/16 inch length Designed for compatible cartridge filter applications