Mande MW16 ThermoWood® Outdoor 4 Person Sauna

Description

Step into something more spacious. The Mande Spa USA MW16 ThermoWood Outdoor Sauna is designed for up to 4 people and handcrafted in Lithuania by the same skilled artisans behind the entire MW Series. Where the MW12 is built for couples and compact spaces, the MW16 opens up the experience -- more room to stretch out, more bench space to share, more moments to enjoy together.

 

At just over 5 feet deep and nearly 6.5 feet wide, the MW16 offers generous interior proportions without becoming an imposing structure in your outdoor space. It is the ideal middle ground in the MW Series -- bigger than the MW12, more space-efficient than the MW20, and perfectly suited for families, couples who want room to breathe, or anyone who simply refuses to compromise on comfort.

 

The structure is built entirely from Scandinavian ThermoWood -- a sustainably sourced timber that has been thermally modified at extreme temperatures through a completely chemical-free process. The result is a wood that is naturally resistant to rot, warping, cracking, and decay, without the use of any preservatives or treatments. It performs beautifully outdoors in every climate, from frozen winters to hot, humid summers, and requires far less maintenance than untreated wood over its lifetime.

 

Inside, the MW16 features two levels of ThermoWood benches -- a deep upper bench at 23.6 in and a lower bench at 16.5 in -- along with warm LED under-bench lighting, an integrated ventilation system, and tempered glass on both the door and windows. The result is an interior that feels bright, open, and genuinely luxurious. A bituminous shingle roof keeps the elements out year-round.

 

The MW16 ships as a flat-pack kit in a secure OSB crate and assembles with standard tools using the included step-by-step build guide. No cranes, no contractors, no guesswork.

 

Mande Spa USA is the American branch of Mande Wood (UAB Seilas), a leading European wellness manufacturer headquartered in Lithuania. Their products are sold through authorized resellers across the United States and throughout Europe at mandespa.eu. Every sauna reflects generations of Lithuanian sauna culture combined with modern precision engineering.

 

Backyard Prime Living is an authorized reseller of Mande Spa USA. Every purchase includes full manufacturer warranty support and our commitment to extraordinary customer care.

 

NOTE: All saunas ship via LTL freight carrier as curbside delivery. A heater is not included in the base unit. Heater options are available as an add-on at time of order. A certified electrician must complete all heater installations.

 

 Features

• Handcrafted in Lithuania by Expert Sauna Artisans -- Built by skilled craftsmen who combine generations of European sauna tradition with modern engineering precision. Every joint, panel, and detail reflects that care.
• Sustainably Sourced Scandinavian ThermoWood Construction -- Thermally modified through a chemical-free heat-treatment process that makes the wood naturally resistant to rot, warping, cracking, and decay. No chemical preservatives. Safe for families and eco-responsible by design.
• Spacious Layout for Up to 4 People -- At 83.1 in wide by 63 in deep, the MW16 delivers genuine four-person comfort. Interior bench width of 62 in and a full interior depth of 53.1 in provide ample room for seated, reclined, and stretching positions simultaneously.
• Rounded Cube Modern Design -- Softly rounded corners, a flat roof, and a contemporary silhouette that integrates naturally with modern homes and outdoor living spaces.
• Tempered Glass Door and Windows -- Multi-pane tempered glass on the door (25.6 in wide x 69.7 in tall) and side windows floods the interior with natural light while maintaining heat retention and privacy.
• LED Under-Bench Lighting -- Warm LED strips beneath the ThermoWood benches create a calming, spa-like ambiance for any time of day or evening session.
• Two-Level ThermoWood Sunbed Benches -- A deep upper bench (23.6 in deep) and lower bench (16.5 in deep), both spanning 62 in wide, accommodate up to 4 users in seated, reclined, or full sunbed positions.
• Integrated Ventilation System -- Promotes steady airflow across the interior to maintain consistent heat distribution and optimal sauna conditions.
• Bituminous Shingle Roof -- Weather-resistant roof tiles protect against rain, snow, moisture infiltration, and UV degradation through all four seasons.
• 1.7 in ThermoWood Wall Construction -- Substantial wall panels deliver excellent thermal retention across the larger MW16 interior volume.
• Precision Joinery Construction -- Traditional woodworking techniques deliver tight, stable joints that hold up under repeated thermal expansion and contraction cycles.
• Flat-Pack Kit Delivery -- Ships in a secure OSB crate on a skid. Assembles with standard tools using the included build guide. No heavy equipment needed.
• Step-by-Step Build Guide Included -- Specific to the MW16, making self-assembly achievable for most homeowners.
• Year-Round Outdoor Use -- ThermoWood and bituminous roofing engineered for all-climate performance, from frozen winters to humid summers.
• Low Maintenance -- Long-lasting ThermoWood means more time relaxing and less time on upkeep.
• Heater Options Available at Time of Order:
  • Harvia Kip 8.0kW with built-in controller
    
  • No Heater (structure only)
• Expected Heat Up Times: MW16 (8kw electric) - Approximately 35-45 minutes
•  5-Year Warranty on Structure -- Backed by Mande Spa USA manufacturer warranty.
• Pairs Well With Cold Plunge Tubs and Hot Tubs -- Mande Spa also manufactures fiberglass, acrylic, and stainless steel outdoor tubs designed for full hot/cold contrast therapy setups alongside the MW Series saunas.

What's Included

INCLUDED IN THE CRATE: 

• MW16 ThermoWood Outdoor Sauna Kit (all structural panels, walls, floor, roof)
• Tempered glass door assembly (25.6 in wide x 69.7 in tall opening)
• Tempered glass side window panels
• LED under-bench lighting
• ThermoWood upper and lower interior benches (sunbed style)
• Bituminous shingle roof system - Integrated ventilation components
• Stainless steel fasteners, hinges, and hardware
• MW16 Build Guide (step-by-step assembly instructions)
• MW16 Floor Plan (engineering dimension drawings)
• If heater option selected at order: Harvia electric or wood-burning heater unit

 

NOT INCLUDED / SOLD SEPARATELY:

• Sauna heater (unless selected as add-on at time of order)
• Heater stones (if applicable to selected heater model)
• Electrical wiring and dedicated 240V circuit (must be installed by a certified electrician)
• Foundation or base platform (concrete pad, deck frame, or compacted gravel base recommended -- not supplied)
• Exterior weather or protective cover
• Aromatherapy accessories (ladle, bucket, essential oils)
• Thermometer or hygrometer

 

DELIVERY NOTE: Ships via LTL (less-than-truckload) freight carrier. Curbside delivery only with liftgate service. White glove delivery and in-home placement are not offered. Delivered by appointment, Monday through Friday during standard business hours. Unit ships unassembled in a secure OSB flat-pack crate mounted on a skid. Inspect the crate before signing the delivery receipt. All shipping damage claims must be reported within 5 days of delivery -- note any visible damage as "subject to inspection" on the delivery receipt at the time of delivery.

Specifications

Manufacturer: Mande Spa USA (American branch of Mande Wood / UAB Seilas)
Model: MW16 ThermoWood Outdoor Sauna
Country of Origin: Lithuania
Sauna Style: Rounded cube outdoor sauna (flat-pack kit)
Collection: MW Series (MW12 / MW16 / MW20)

OCCUPANCY: Capacity: Up to 4 people

EXTERIOR DIMENSIONS:
Overall Width: 83.1 in  (6 ft 11.1 in)
Overall Depth: 63.0 in  (5 ft 3.0 in)
Overall Height: 83.5 in  (6 ft 11.5 in)

INTERIOR DIMENSIONS:
Interior Width: 75.6 in  (6 ft 3.6 in)
Interior Depth: 53.1 in  (4 ft 5.1 in)
Interior Height: 83.5 in  (6 ft 11.5 in)
Interior Width wall to wall: 78.0 in

DOOR OPENING:
Door Width: 25.6 in
Door Height: 69.7 in

BENCH DIMENSIONS:
Bench Width (both): 62 in across interior
Upper Bench Depth: 23.6 in
Lower Bench Depth: 16.5 in
Upper Bench Height from floor: 63.0 in
Lower Bench Height from floor: 29.7 in
Bench support gap: 1.6 in off floor
Base/leg height: 3.5 in

ADDITIONAL INTERIOR MEASUREMENTS:
Distance bench face to glass wall: 15.7 in
Gap between benches: 2 in
Bench support depth: 10 in
Side section width: 31.1 in
Heater/corner section: 15.4 in wide x 34.3 in high x 16.5 in deep
Total bench structure height (upper): 63.0 in
Panel clearance at top (ventilation): 0.8 in

WALL AND STRUCTURE:
Wall Thickness: 1.7 in (ThermoWood panel construction)
Floor/base thickness: 3.5 in (including leg/base height)

WEIGHT:
Assembled Weight: 1,390 lbs

MATERIALS:
Exterior and Structure: Scandinavian ThermoWood (thermally modified, chemical-free)
Interior Benches: ThermoWood sunbed style (two-level: upper and lower)
Door and Windows: Tempered glass
Roof: Bituminous shingle tiles
Fasteners: Stainless steel hardware throughout
Lighting: LED under-bench lighting
Ventilation: Integrated passive ventilation system

HEATER RECOMMENDATION (add-on at time of order):

Electric: Harvia Kip 8.0kW with built-in controller
No Heater: Structure only

• Harvia KIP 8.0kW
  • Voltage: 240V
  • Phase: Single phase
  • Recommended Breaker: 40–50 Amp (verify per manual)
  • Wiring: Copper only
  • Sauna Room Size: Medium rooms

ELECTRICAL REQUIREMENTS (if electric heater selected):
Voltage: 240V AC
Amperage: Typically 30 Amp dedicated circuit (verify with selected heater model and local electrician)

Note: A certified electrician must install all heater wiring. Do not connect to a shared household outlet.

SHIPPING:
Ships Via: LTL freight carrier
Delivery Type: Curbside with liftgate -- by appointment Mon through Fri
Packaging: OSB flat-pack crate on a skid
Lead Time: 2-4 weeks

DURABILITY:
Weather Resistance: High resistance to moisture and decay
Climate Suitability: Year-round outdoor use in all climates

WARRANTY:
Structure: 5 years (Mande Spa USA limited manufacturer warranty)
Heaters / Accessories: All heater and accessory sales are final and non-refundable. Harvia heater warranty applies separately.
Warranty Exclusions: Improper installation or handling, unauthorized modifications, misuse, negligence, or intentional damage