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True ThermoWood® Thermally Modified Timber for Durability

Capacity Designed for 5-6 People

Wall Thickness 1.7" ThermoWood® Exterior

Interior Space 77.6" (w) x 68.9" (d) × 75.6" (h)

Coverage 5 Year Manufacturer Warranty
Mande Spa USA MW20 Thermowood® Outdoor Sauna
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MW20: The Largest Sauna for Expansive Comfort and Lasting Wellness
When more space means more connection, the MW20 delivers. As the largest model in the Mande Spa USA collection, it’s built for 5–6 people—offering the room you need for family gatherings, social evenings, or a spacious personal retreat.
Generous Seating for Groups
The MW20’s expansive interior ensures everyone can relax comfortably, whether you’re hosting friends or enjoying quiet time with loved ones. Wide benches and open floor space create a truly unconfined sauna experience.
Thermowood® Strength and Stability
Constructed from premium Thermowood®, the MW20 resists moisture, warping, and decay. Its enhanced stability makes it ideal for year-round outdoor use, from humid summers to freezing winters.
Crafted in Lithuania
Handbuilt in a region where sauna culture runs deep, the MW20 reflects generations of European craftsmanship. Every joint, panel, and finish is made with precision to stand the test of time.
Wellness Without Limits
With space to stretch out and the heat to soothe, the MW20 offers more than relaxation—it’s a tool for recovery, stress relief, and everyday rejuvenation, right in your own backyard.
Floor Plan

Harvia KIP 8kW
$1,095.00
Harvia KIP 8kW w/ WiFi
$1,710.00
Harvia M3 Wood Burning w/ Chimney
$2,930.00
Summit Ridge Supply is an independent, U.S.-based store focused on high-quality gear and real customer support. We’re based in Minnesota and take pride in offering a more personal, informed experience than the big-box retailers. Have questions or doubts? Give us a call.
We select well-designed products from trusted brands—gear we’d be confident using ourselves. We feature our favorite products on the site, but can often source other items from the brands we carry if you’re looking for something specific.
When you reach out, you’ll connect with someone who knows the gear and wants to help you get it right. We stand behind every order and want you to feel confident from start to finish.
–JD, Founder