PA81 Pool Filter Replaces Hayward C580E, CX580XRE, Ultral-A3, Unicel C-7483, Hayward SwimClear C3020, C3025, C3030, Filbur FC-1225, FC-6425,4 X 81 sq. ft. Filter Cartridge,L x OD: 19 5/8"x 7"4 Pack

• 【SPECIFICATIONS】Length: 19 5/8"; Outside Diameter: 7"; Top Open: 3"; Bottom Open: 3". Filtration Area: 81 Sq.ft; Filter Material: Trilobal Filtration Fabric.

• 【REPLACEMENT MODELS】TOREAD TRF-7483 filter compatible PA81, Unicel C-7483, Aladdin 18101, Baleen AK-60450, Darlly 70811, SD-00825, SD-00365. NOTE: This is a compatible spare part and the manufacturers' names and part numbers have been used for reference purposes only. TOREAD is an independent brand.

• 【REINFORCEMENT STRUCTURE】With 25% thicker filtration fabric, heavy chlorine resistant and break-resistant end caps and reinforced center support, the filter delivers high powered propulsion flow, and crystal clear water, providing you with a relaxed and healthy enjoyment.

• 【MORE EFFICIENT FILTRATION AREA】Uniformity and high-performance trilobal fabric has 21-40% higher capacity compared with common point-bond fabric. The trilobal shape of fabric fibers also helps catch particles, increases efficiency without the pressure drop penalty, and helps reduce filter cleaning frequency.

• 【EASY TO CLEAN】The Trilobal Fabric Structure filter material makes it easy to release impurities when cleaning the filter, the filter is like a new one after cleaning. It is recommended that you clean cartridges every 2 weeks to maximize your spa's performance.