This is the best replacement filter for Sundance Spas MicroClean 2 filter uses advanced, triple-layer pleated material to provide superior filtration for crystal clear water. The system efficiently traps larger particles in the upper layers of the filter and smaller particles in the lower layers. It absorbs oils and lotions, removing them from the water. Fits Sundance Maxxus, Optima, Cameo, Majesta, Altamar, Marin and Capri 2006-2008. Disposable after 6 to 12 months use. Height: 19″ Diameter: 8.5″ Hole: 2.5″ 120 sq ft