




SaunaLife Model S4B – Soak-Series Outdoor Wood-Fired Hot Tub (Black, Up to 6 Persons)

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| Brand | SaunaLife |
|---|---|
| Model | S4B |
| Series | Soak-Series |
| Color | Black Exterior with Dark Grey Fiberglass Interior |
| Material | Thermo-Spruce (up to 2× longer lifespan than Cedar) |
| Seating Capacity | Up to 6 persons |
| Water Capacity | 304 Gallons |
| Heater Type | 304 Stainless Steel Wood-Burning Heater |
| Heating Time | 1.5–2 Hours (40°F to 95°F) |
| Power Requirement | None – Wood-Fired / Off-Grid |
| Interior Dimensions | 71" Diameter × 33" Deep |
| Exterior Dimensions | 79" Diameter × 37" High |
| Stove Dimensions | 19.8" L × 11.8" W × 13.1" H |
| Chimney Dimensions | 95" H × 4.7" Diameter |
| Maximum Wood Length | 16" |
| Maximum Temperature | 106°F |
| Shipping Dimensions | 91" L × 46" W × 87" H |
| Shipping Weight | 595 lbs |
| Product Weight (Filled) | 3,064 lbs |
| Origin | Handcrafted in Northern Europe |
| Warranty | 2-Year Limited (Consumer Use) |
Experience the elemental balance of fire, water, and craftsmanship with the SaunaLife Model S4B, part of the premium Soak-Series collection.
Designed for up to six people, this luxury wood-fired hot tub merges Scandinavian engineering with eco-conscious simplicity — no electricity required.
Built from Thermo-Spruce, a material proven to last up to twice as long as cedar, the S4B features a thick, contoured dark grey fiberglass interior that cradles the body in ergonomic comfort. The exterior showcases a sleek black finish that blends beautifully into natural or modern outdoor spaces.
Powered by a 304 stainless steel wood-burning heater with dual heat chambers, the Model S4B delivers rapid, even heating — reaching ideal soaking temperatures in under two hours.
Its secondary combustion system maximizes efficiency, reducing wood usage by up to 50% compared to traditional wood-fired hot tubs.
From setup to serenity, the Model S4B arrives fully assembled, requiring no electrical hookup. Simply fill, ignite, and relax as heat and nature intertwine in a restorative open-air ritual.
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Fully Off-Grid Design: No electricity required — powered entirely by clean-burning wood.
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Thermo-Spruce Craftsmanship: Outlasts cedar up to 2×, offering superior weather and thermal resistance.
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Premium Comfort: Ergonomic, contoured fiberglass interior supports the body for longer, more relaxing soaks.
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Rapid Heat-Up Time: Warms 304 gallons to perfect temperature in just 1.5–2 hours.
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High-Efficiency Heater: 304 stainless steel construction with dual heat chambers and self-cleaning corrugated design.
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Superior Heat Retention: Air insulation between wood and fiberglass accelerates heating and maintains water temperature.
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Eco-Conscious Luxury: Minimal wood consumption and no electrical demand make it the sustainable choice for home wellness.
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Handcrafted in Northern Europe: Built by skilled artisans for exceptional longevity and performance.
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Includes Insulated Cover & Steps: Easy entry, superior heat retention, and elegant protection when not in use.
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Perfect for Entertaining: Comfortably accommodates up to six bathers for shared rejuvenation.
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Fully Assembled SaunaLife Model S4B Hot Tub
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304 Stainless Steel Wood-Burning Heater
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Polished Stainless Steel Chimney & Cap
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Thermo-Spruce Steps
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Extra-Thick Foam-Insulated Cover (Dark Grey Marine Vinyl Exterior)
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Integrated Drainage Tap
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User Manual & Care Guide
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2-Year Limited Warranty (Consumer Use)
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