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 2 Pack

• 【Certified Quality & Safety】 POOLPURE Pool and Spa filter proudly hold the NSF/ANSI 52 certification, tested and verified by IAPMO. Trust in POOLPURE to provide crystal-clear, purified water, enhancing your overall pool or spa experience. Dive into unmatched relaxation.
• 【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.
• 【Compatibility Details】Designed to fit models:Pleatco: PTL18P4, PTL18-4, PTL18-XP, Unicel: 4CH-21, Filbur: FC-0121, SD-00845, SD-00821, SD-00838, SD-01161, SD-01363,SD-00001,Aladdin 11901, Baleen AK-9003,Pageant Spa Top Load,Saratoga 20245-238,Vita PVT-25N and more. ★NOTE: This is a compatible part. Original manufacturers' names and part numbers are for reference only. POOLPURE stands as an independent brand.
• 【Superior Filtration】Our innovative "Dirt-Locking" technology ensures that the fabric captures significantly more contaminants than standard filters. Efficiently remove hair, leaves, dust, sediment, sand, and more, ensuring a clean and refreshing spa and hot tub experience.
• 【Effortless Cleaning】 The Trilobal Fabric Structure of the filter facilitates easy release of impurities during cleaning, ensuring the filter feels renewed after each wash. For optimal performance, it's recommended to clean the cartridges once a month. ️ Not for Backwashing – This filter cartridge is not designed for backwashing. Backwashing may cause cracks or permanent damage.

Replacement Part Numbers: 4CH-21|20245-238 | SD-00845 | SD-00821 | SD-00838 | SD-00001 | SD-00612 | PTL18-XP | SD-01161 | PTL18-4 | SD-01363 | PVT-25N | PA17 (PAD OPT) | PA13 | PSI18 | PTL18P-4 | PTL18P4-4 |PVT-25N | 11901|AK-9003 . Used in pools / spas made by: Alcove | Atera | DM Industries | Dream Maker Spas | Maax Spas of AZ | Pageant Spas | Saratoga Spas | Vita Spas and other manufacturers