LBLVBNEWD 4CH-21 Spa Filter Replaces for PDM25P4, PTL18P4, PA13, PA17, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 19 sq.ft, Spa Hot Tub Filter Cartridge, 2 Pack

["Perfect Compatibility -- 4CH-21 hot tub filter replacement Compatible with Compatible with 4CH-21, PTL18, PDM25P4, PTL18P4, FC-0121, 20245-238, SD-00845.[ Note: This is a compatible spare part. The manufacturers’ names and part numbers are used for reference purposes only. LBLVBNEWD is an independent brand ]","Great Filtration Performance -- Equipped with upgraded 30-micron high-efficiency filtration and 19 sq. ft. filtration area, this hot tub filter cartridge effectively captures hair, leaves, dust, sediment, sand, and more, providing you with a clean and comfortable spa experience","Washable & Reusable -- The advanced trilobal fabric structure allows trapped impurities to release easily during rinsing, making the filter quick to clean and reusable. For optimal performance, it is recommended to clean the 4CH-21 hot tub filter cartridge 2-4weeks","Easy Drop-In Installation -- Length: 8’’; Outer Dimension: 4-5/8\"; Top: cone handle; Bottom: 1-1/2\"male thread MPT; Filtration Area: 19 sq. ft. these hot tub filters installs in seconds with no tools required","Durable & Long-Lasting Design -- With our reinforced polyester fiber filter media, heavy-duty ABS end caps as well as pleats, the filters are easy to clean, strong to filter, sturdy to hold in position. If cleaned regularly more often, its service life can be largely enhanced, the water usage will also be largely minimized"]