Utopia Series
6 models: Cantabria, Florence, Geneva, Niagara, Ravello and Tahitian
- Seats 3–8 adults
- 39–74 jets
- 265–615 gallons

Caldera hot tubs at Tri-State come in 3 series: Utopia, Paradise and Vacanza. That's 18 models, seating 2–8 adults.
6 models: Cantabria, Florence, Geneva, Niagara, Ravello and Tahitian
6 models: Kauai, Makena, Martinique, Reunion, Salina and Seychelles
6 models: Aventine, Celio, Marino, Palatino, Tarino and Vanto
18 hot tubs
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