POOLPURE 4CH-21 Spa Filter Replaces PDM25P4, PTL18P4, PA13, PA17, Filbur FC-0121, 20245-238, PVT-25N, Baleen AK-9003, SD-00845, 18 sq.ft Screw in Male Fine(1 1/2" MPT) Thread Filter 1PACK

Specifications

• 【 NSF/ANSI 50 CERTIFIED QUALITY】POOLPURE Spa filters are rigorously tested and certified by IAPMO to meet the NSF/ANSI 50 standard, ensuring dependable performance and crystal-clear water quality for your spa.
• 【SPECIFICATIONS】Length 8", Outside Diameter 4 5/8", Top: Handle; Bottom: 1 1/2" MPT/ Male Thread. Filtration Area: 18 sq. ft.; Filter Material: Trilobal Filtration Fabric.
• 【COMPATIBLE MODELS】 PLF4CH-21 Spa Filter is compatible with PTL18P4, PTL18-4, PTL18-XP, Unicel 4CH-21, Filbur FC-0121, SD-00845, SD-00821, SD-00838, SD-01161, SD-01363, SD-00001, Pageant Spa Top Load, Saratoga 20245-238, Vita PVT-25N and more. ★NOTE: POOLPURE is an independent brand offering compatible replacement products that are engineered to meet OEM standards. All original manufacturer names and part numbers are for reference only.
• 【SUPERIOR FILTRATION PERFORMANCE】The advanced Dirt-Locking technology captures over three times more debris than standard filter cartridges, including hair, dust, fine particles, and sediment, ensuring consistently clean, fresh, and crystal-clear pool or spa water.
• 【EFFORTLESS CLEANING】The filter's trilobal fabric structure allows impurities to be released easily during cleaning, keeping the cartridge feeling like new. For optimal performance, clean once a month. ⚠️ Do not backwash — backwashing may cause cracks or permanent damage.