Pay in 4 interest-free payments of $8.00 Learn more
Ships within 48 hours · Estimated delivery Sep 28 - Oct 3
thoroughly clean pool by scrubbing surface of algae growth
optimizing chlorine effectiveness
automatically and continuously
The XL exists because not all hard water is the same:
Vanguard 2002-2007
Caldera 31489 | 30 sq ft Spa Filter Cartridge Massage Equipment thoroughly clean pool by scrubbingThe Caldera 31489 filter cartridge delivers 30 square feet of pleated filtration for cleaner, clearer spa water. It's one of the most widely compatible cartridges in the Watkins family of spa brands, serving a broad range of models across decades of production so it's a dependable replacement to keep on hand. Filtration is the quiet backbone of good spa water. Every soak leaves behind body oils, lotions, hair, and fine debris, and the cartridge is