SKU: 12356233058

White Onyx Traditional Outdoor Sauna

$4362.75 $4847.50
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 3 - Sep 8

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Description

White Onyx Traditional Outdoor SaunaWhite Onyx Traditional Sauna Modern Design. Timeless Heat. Built to Endure. Introducing the Onyx Traditional Sauna a bold fusion of modern engineering and authentic Finnish sauna tradition. Crafted with a full aluminium exterior frame and a warm Canadian Hemlock interior, the Onyx delivers both unmatched durability and a deeply restorative sauna experience. The Traditional Sauna Experience At the core of the Onyx Sauna lies the Harvia Vega BC45, BC60,

White Onyx Traditional Sauna

Modern Design. Timeless Heat. Built to Endure.

Introducing the Onyx Traditional Sauna — a bold fusion of modern engineering and authentic Finnish sauna tradition. Crafted with a full aluminium exterior frame and a warm Canadian Hemlock interior, the Onyx delivers both unmatched durability and a deeply restorative sauna experience.

The Traditional Sauna Experience

At the core of the Onyx Sauna lies the Harvia Vega BC45, BC60, a powerful 4.5KW & 6KW electric sauna heater engineered in Finland to deliver the true "löyly" experience the soft, enveloping steam that defines an authentic sauna.

Unlike infrared systems, which rely on direct heat and lack steam, the Vega uses hot stones to heat the room evenly, reaching higher temperatures and allowing you to control the humidity by pouring water over the rocks. This creates a deeply immersive environment perfect for both dry heat sessions and the classic steam sauna ritual.

The result is superior heat distribution, deeper muscle relaxation, and a more genuine sauna experience  just as it’s been enjoyed in Finland for generations.

Built for a Lifetime: The Strength of aluminium

The Onyx Sauna’s aluminium exterior frame is designed with longevity and resilience in mind. aluminium is naturally resistant to rust, corrosion, and weathering, making it an ideal choice for outdoor environments. Its strength ensures long-term structural stability, while its low-maintenance surface retains a clean, modern finish for years to come.

Combined with its sleek aesthetic and durable performance, aluminium brings both form and function to your wellness space  ensuring the Onyx stands the test of time in any setting.

  • Rust-proof & corrosion-resistant: Perfect for humid environments

  • Low maintenance: Won’t crack, swell, or fade.

  • Sleek white finish: Holds its modern aesthetic for years

Key Features

  • Exterior: White powder-coated aluminium frame

  • Interior: Premium Canadian Hemlock wood  soft, aromatic, and perfect for heat insulation

  • Heater: Harvia Vega traditional stove (electric) 

  • Harvia Accessories: Bucket, ladle, thermometer, hourglass timer ,Sauna stones

  • Capacity: 2-4 person models available 

  • Design: Clean lines, modern black profile, minimalist luxury

Whether you're building your wellness oasis at home or upgrading your retreat space, the Onyx is engineered to perform and designed to impress combining the fire of tradition with the strength of modern materials.

Specifications:

  • Dimensions: 2Person 150x110x200cm, 4 Person 180x150x200
  • Interior: Premium Canadian Hemlock
  • internal: 2Person -Bench Seat, 4 Person L Shaped bench seat
  • Exterior: White Scratch And weather proof Aluminium Paneling
  • Lighting: 
  • Heater: Harvia 2 person 4.5KW Sauna Stove, 4 Person 6KW Sauna Stove
  • Capacity: 2person or 4 Person
  • Premium Heavy Duty Slanted Stainless Steel Roof
  • Power: 2 person 20amp 4 person 28amp

Additional Cost Optional Upgrades
Enhance your sauna experience with a range of premium upgrade options:

  • Interior wood upgrade to Red Cedar

  • Customised bench size and layout

  • Multi-level tiered bench seating

Contact us to discuss your vision we’ll help you create the ultimate sauna design tailored to your preferences.

*Product images are for reference only. Actual colours, or design details may differ

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 12356233058

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4.8 ★★★★★
Based on 16 reviews
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A
Verified Purchase
Andy
Charlottesville, US
★★★★★ 5
Made a big improvement in cabin noise—highly recommend
Model: SLH20025
Siless Hybrid made a huge difference in reducing noise in the floor of my truck cabin. In some areas, there was basically just bare sheet metal between the inside and outside, so adding this really helped the truck feel more solid and noticeably quieter on the road. I used Kilmat on the doors, and honestly I wish I had used Siless Hybrid there too, but it was too late by the time I realized the difference. This material is very sticky, easy to cut, and simple to apply, which made the install pretty smooth. Just a heads-up: the tacky side gets messy and will bond to clothing really easily, so be careful during installation. Overall, I’d definitely buy it again—great product with real results.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 2, 2025
A
Verified Purchase
AmazinFrank
Massapequa, US
★★★★★ 5
Very good product at a fair price
Model: SLH20025
Very good sound deadener and heat shield, it is a bit sticky to work with, but easy to shape and cut
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
E
Verified Purchase
Eric Caldeira
Carnegie, US
★★★★★ 5
I wish I had Siless 20 years ago!!!
Model: SLH20025, Model: SLH20025
I have installed all kinds of insulation in vehicles over many years. I only needed to purchase 2 boxes to complete the entire interior siding of my 2025 chevy express, what a great value! I wanted to insulate my locksmith van for sound and heat. The sound reduction virtually eliminated the road noise. These panels also look amazing. It got up to 110F in the sun with the doors closed. After adding Siless insulation the temperature maxed out at 97F. That is a massive difference. Plus, I didn't even finish with the roof before testing. Siless Hybrid 3in1 was extremely easy to cut and adhere onto metal panels. I'm impressed with the quality of the individual panels and the adhesive is not toxic smelling compared to some others. My favorite thing about these panels is you can actually take them off and readjust them before they finally stick and they do not leave any black residue behind when you pull them up to adjust them. All I needed was a heat gun, knife and a roller to complete this job. The size of each panel is perfect, you can handle them with ease. I probably won't need your product again for a while, but when I do I will definitely be back.
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Reviewed in the United States on September 21, 2025
M
Verified Purchase
Mark Kadrich
Grantham, US
★★★★★ 5
Works well and is easy to install.
Model: SLH20025, Model: SLH20025
I was sound and heat insulating a generator bay in my class A RV so I did three tests before and during material application: I did a sound level test to see how effective the material was for my application, a "stickiness" test, and a flammability test. This was indoors on a dry 78°F day. From beginning to end, the entire process, including testing, took 5 hours to install 25 sqft or material in a very complex area. One hour for cleaning, 3 hours for installation, and 1 hour for test setup and testing. Using a sound meter, I took before and after readings and determined that I reduced the sound level by 2.2 db (40% energy decrease) with a noticeable decrease in sound and frequency. The generator bay is located under the master bedroom in the aft portion of the coach. The sound went from a rattling, vibrating generator noise to a more tolerable low level rumble. The material was easy to apply. I did some testing prior to application and determined that surface preparation is key. I cleaned my painted metal surface and then degreased with acetone and the material stuck well. Be careful and purposeful when you apply the material because once it was stuck to the metal, it was quite difficult to remove or reposition. Since it was going to be installed into a gasoline powered generator bay located under our sleeping quarters, I did some flame testing to determine the level of risk. Although not highly flammable after installation, my testing revealed that the PE used will catch on fire under certain circumstances. In order to reduce the risk, I used aluminized duct tape to ensure that all the edges were sealed and the PE was not exposed to direct flame in the event of a fire. I also decided to install an automatic fire extinguisher as an added precaution. In all fairness there should be one installed in the generator bay anyway. All in all, I am very satisfied with the product and the results. I have recommended this product to my other RV owner friends.
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Reviewed in the United States on April 13, 2025
J
Verified Purchase
Josh
Omaha, US
★★★★★ 5
Great product. Best value i could find
Model: SLH20025
I'm using talk to text, so forgive any grammatical and spelling errors. I ordered this product after doing a bit of research on sound dampening materials. I had been doing car stereo for quite some time since my teens. Itook a break for 20 years or so. I'm now 40 and back in the day there was dynamat. And that was about it. as irecently bought a new 2017 F350 crew cab. I wanted to put in a new stereo system and being that it was my dream truck. I was going to put in my dream stereo. But before I could do that, I needed to start with the sound deadening. I looked into today's leading product and found a company called resonx. Had taken their place as king of the hill in sound deadly. I researched their products and found the materials they were built from and Silas was the closest match at the best price I used Silas Max. First, then Silas 3 and 1 hybrid over that on all exterior panels. Then, on the interior panels. I used the 3 and 1 hybrid . on the floor I used Silas Max. Then, the 3 and 1 hybrid, then Silas liner over that the car is incredibly quiet . As far as sound dampening and deadening, it works very well for the money really can't beat it. Do your homework no How and where to apply it? And you really can't go wrong or about $400. I did. What would have cost me easily? Two thousand in other brands highly recommend the product prep work.Is everything do your homework?Do it right and you will be happy with this stuff
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

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