The Filbur FC-3748 Intex 520 Pool & Spa Filter is a compatible replacement water filter cartridge for the Intex 520 "D" filter that is used to purify your swimming pool or spa water. This Filbur pool filter is constructed with antimicrobial end caps that are reinforced for strength and treated to prevent the growth of bacteria and mold on your cartridge. This compatible Intex 520 filter boasts wide support bands that are resistant to breaking while also promoting optimum water flow. (APC Brand Manufactured by Filbur).
APC Filbur FC-3748 30 Sq. Ft. Filter Cartridge Brand Mfg. by Filbur - B079T22YSL