OTSO PURO
The flow of nature and the warmth of a sauna.
A patented structure engineered for strength, durability, and easy installation.
Patent pending PCT/FI2026/050038
SAUNA BENCH ELEMENTS
Sauna step stool
The OTSO Puro sauna step stool combines graceful design with a sturdy construction, offering a safe and comfortable solution for your sauna. Carefully designed and built from high-quality materials, it provides excellent stability and confidence with every use.
Each leg is equipped with adjustable, non-slip feet, ensuring the step stool stands firmly on all four legs even on uneven surfaces. The OTSO Puro sauna step stool is a versatile addition to your bathing spaces and can be used both as a sauna step stool and as a stand alone stool in the washing room
Measurements:
576 mm x 470 mm x 320 mm
(Length x depth x height)
Delivery: In parts, easy to assemble yourself.
Package size: 580 × 320 × 90 mm
Aspen
Alder
Thermo Aspen
Bench elements
Enduring comfort for modern sauna spaces. OTSO Puro bench elements combine refined design with exceptional comfort. The softly rounded front edge is gentle against the legs, ideal for longer, more relaxing sauna experiences.
Bench elements come in two in sizes.
The intelligent OTSO Puro bench structure is based on a wooden dowel construction. Each
board is fitted with 8 mm wooden dowels at each end, allowing the bench elements to be packed tightly for efficient transport and enabling quick and easy assembly. Each dowel joint is engineered to carry a load of up to 150 kg, ensuring exceptional strength and long-term durability. This structure also allows the elements to be easily shortened or modified as required.
The elements are delivered flat packed.
Use: OTSO Puro elements are highly versatile and easily adaptable to different floor plans and design requirements. OTSO Puro bench elements, designed for use inside the sauna, can also be used in dressing areas or locker rooms to achieve a wholistic design.
Package size:
Bench element 1: 970 × 320 × 90 mm
Bench element 2: 580 x 320 x 90 mm
Aspen
Alder
Thermo Aspen
Backrest elements
Designed for comfort, style, and functionality. Sauna backrests play an essential role in creating a comfortable and well-designed sauna. They enhance seating comfort, elevate the visual appeal of the sauna, and protect the sauna wall from dirt and wear. An LED strip can be installed behind the backrests, allowing light to shine beautifully through the gaps between the boards, creating a warm, ambient glow.
Backrest elements come in two sizes.
OTSO Puro backrest elements feature softly rounded top and bottom edges, forming a smooth and even surface. The absence of sharp corners creates a noticeably softer feel and significantly improves comfort during longer sauna sessions. Installed using separate backrest supports OTSO Puro
backrest elements are easy to remove for cleaning, making sauna maintenance effortless.
In addition to its primary use, the OTSO Puro backrest element can also be used as a cover panel between the upper and lower benches, ensuring
a cohesive and refined sauna interior.
Structure also allows the elements to be easily shortened or modified as required.
The elements are delivered flat packed.
Modifiability: The elements can be easily shortened or modified as required.
Package size:
Backrest element 1: 970 × 135 × 90 mm
Backrest element 2: 580 x 135 x 90 mm
Aspen
Alder
Thermo Aspen
Corner bench element
Designing corner benches for saunas can be challenging, but the
OTSO Puro Corner Bench Element makes it effortless. It provides a
practical and elegant way to create corner seating while adding a clean, contemporary look to your sauna interior.
Suitable for both upper and lower benches, the OTSO Puro Corner Element is equally well suited for changing rooms where functional and stylish corner seating is required. The element connects easily to other seating components using M6 carriage bolts with nuts, ensuring a secure and seamless fit.
With OTSO Puro Corner Elements, you can effortlessly create a variety of corner solutions for both saunas and changing rooms, all while maintaining a cohesive and refined design.
The element are delivered flat packed.
Measurements:
Length: 650 mm / 650 mm
Depth: 570 mm
Hight: 100 mm
Usage: The OTSO Puro Bench Corner element makes it easy to continue seating through a corner. Elements easily connect to each with included carriage bolts.
Package size: 790 × 320 × 90 mm
Aspen
Alder
Thermo Aspen
Sauna bench end panel
a flexible solution for sauna benches.
This high-quality sauna bench end panel makes building and modifying sauna benches easier. The panel measures 1200 × 580 mm and is designed for flexibility: it can be installed as either a right-hand or left-hand version, making it suitable for many different bench layouts.
Easy height adjustment
The height of the bench end can be easily adjusted by shortening the legs, allowing you to fit the bench precisely to the desired height without complicated modifications.
The legs also feature adjustable feet, making it easy to level the structure even on uneven floors and ensuring a stable installation.
Option to build a lower bench
If you also need the end panel for the lower bench, you can purchase an extension piece that attaches to the main end panel. The main end panel has pre-drilled holes on one leg for the extension, so attaching it is easy and neat.
Quick and easy installation
Installation can be done with basic tools.
You only need:
-
drill driver
-
wood glue
Features
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Dimensions: 1200 × 580 mm (additional part 768 x 495 mm)
-
Can be installed right-hand or left-hand
-
Adjustable height by shortening the legs
-
Adjustable feet for stable installation
-
Possibility to purchase and attach an additional part for the lower bench
-
Easy installation with basic tools
Aspen
Alder
Thermo Aspen
Frame unit and
Installation kit
The following are examples of what you will need to order build saunas according to these examples.
1. I-model OTSO Puro bench which requires:
2 pcs Frame units
1 pc Installation kit
2. L-model OTSO Puro bench which requires:
3 pcs Frame units
1 pc Installation kit
3. U-shaped OTSO Puro bench which requires:
6 pcs Frame units
1 pc Installation kit
Frame Unit – a simple and reliable base for sauna bench installation
The Frame kit offers a simple and efficient solution for installation. Designed for ease of installation and long-lasting performance, it pro-
vides a solid base for sauna bench structures.
The frame members are made from engineered wood, bonded with M1- class glue. Engineered wood ensures excellent dimensional
stability and high breaking strength, guaranteeing durability and reliability even in demanding sauna conditions
The package includes:
2 pcs 39 x 66 x 2400 mm frame timber
4 pcs stainless steel frame brackets
8 pcs 5x20 mm screws
8 pcs 6 x 50 mm Lag screws Zink covered
Installation kit
If you are modifying OTSO Puro seating elements, e.g. load-bearing bench ends or installing backrest elements as an infill element between the upper and lower benches, you will need
an installation kit.
The installation kit includes:
2 pcs stainless steel frame brackets
4 pcs 5x20 mm stainless steel screws
4 pcs 6 x 50 mm zinc-plated Lag screws
6 pcs adjustable feet
10 pcs nailing plates
How to use OTSO elements
OTSO sauna elements can create sauna setting of your dreams.
Elements can create the whole sauna setting, but for example our sitting elements can also be used to create various kinds of benches and seats for your sauna or dressing room.
OTSO bench elements can be easily modified to create various benches
and steps for a sauna or dressing room.
With our ready-made instructions and assembly animations, you can implement even challenging
sauna solutions.
OTSO sauna bench element materials
Aspen
Alder
Thermo Aspen
