Pumps, heaters, control boards, and replacement parts — without the confusion.
Shop Spa PartsWe make it easy to find the right replacement part — without guessing.
SpaShopper makes it easy to find quality hot tub and spa replacement parts without the frustration. From spa pumps and heaters to control boards, jets, filters, and plumbing components, we stock parts that fit a wide range of popular spa brands. Whether you’re fixing a heating issue, replacing a worn pump, or upgrading aging components, SpaShopper helps you get your spa running again quickly and confidently.
Genuine replacement filter cartridge designed for select Watkins Caldera hot tub models. This 50 square foot filtration cartridge features precision dimensions of 7" diameter and 10-3/4" height, with an open bottom measuring 2-11/16" for secure fitting.
| Application | Caldera Spas (Watkins), Watkins Mfg/Caldera Spa |
| Bottom Physical Dimension | 2-11/16" |
| Bottom Style | Open |
| Diameter | 7" |
| Height | 10-3/4" |
| Part Number | 73532 |
| Filtration Area | 50 sqft |
Horizon Series by Filbur
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