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OEM replacement filter for Caldera spas including Kauai and Martinique models from 2003 onward. Measures 7″ diameter x 10-3/4″ long with 50 sq ft of filtration. Caldera part number X135595. Cross-references Unicel C-7350, Pleatco PCD50N, and Filbur FC-3963. Open top and bottom design. Replace every 12-18 months for optimal performance.
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🇺🇸 Ship from USA · On Agora since 2026
$29.99