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

Puro Sauna Step stool

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  • Thermo Aspen

    The OTSO Puro sauna step stool combines graceful design with a sturdy construction, offering a safe and comfortable solution for your sauna.

  • Alder

    Carefully designed and built from high-quality materials, it provides excellent stability and confidence with every use.

  • Aspen

    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

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  • 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

  • Sarake

    Measurements:

    576 mm x 470 mm x 320 mm
    (Length x depth x height)

    Watch animation 
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Puro Sauna bench element 1

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  • Thermo Aspen

    Quick and easy to assemble – the module is built using 8 mm wooden dowels, without complex joints.

  • Alder

    The structure is robust and built to last: water does not pool between the bench slat and the frame, ensuring a long service life and trouble-free use.

  • Aspen

    The beautifully rounded front edge is the signature feature of the OTSO Puro model—reminiscent of a forest stream flowing gently, bringing natural movement and softness to the space.
    The elements can be shortened.

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  • OTSO Puro sauna bench elements are supplied in parts.

    Usage: The element is suitable for use as either an upper or lower sauna bench. It can also be used to construct vertical end panels or shaped into changing room benches—a versatile module that adapts to the space's requirements and design.

  • Measurements:
    960 mm x 570 mm x 100 mm
    (Length x Depth x Height)

    Package size: Bench element 1: 970 × 320 × 90 mm

    Watch animation 
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Puro Sauna bench element 2

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  • Thermo Aspen

    Quick and easy to assemble – the module is built using 8 mm wooden dowels, without complex joints.

  • Alder

    The structure is robust and built to last: water does not pool between the bench slats and the frame, ensuring a long service life and trouble-free use.

  • Aspen

    The beautifully rounded front edge is the hallmark of the OTSO Puro model—reminiscent of a forest stream flowing gently, bringing natural movement and softness to the space. The elements can be shortened.

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Buy

  • OTSO Puro sauna bench elements are supplied in parts.

    Usage: The element is suitable for use as either an upper or lower sauna bench. It can also be used to construct vertical end panels or shaped into changing room benches—a versatile module that adapts to the space's requirements and design.

  • Measurements:
    576 mm x 570 mm x 100 mm
    (Length x Depth x Height)

    Package size: Bench element 2: 580 x 320 x 90 mm

    Watch animation 
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Puro Backrest element 1

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  • Thermo Aspen

    Softly rounded corners provide pleasant support for the back.

  • Ader

    Thanks to the rounded edges, the backrest slats do not press against the body but instead follow its contours naturally and gently.

  • Aspen

    Assembly is really quick and easy; you don't need professional skills to create a sturdy and beautiful finished product.

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Buy

  • The construction is the same as in all OTSO Puro elements: the parts are joined together using 8 mm wooden dowels. Assembly is quick and easy; you do not need professional skills to create a sturdy, beautiful finished product. True to its name, the backrest element serves as a backrest, but it can also be used as a cover panel between the upper and lower benches.
    The elements can be shortened.
    Supplied in parts.

  • Modifiability: The elements can be easily shortened or modified as required.

    Measurements:
    960 mm x 56 mm x 300 mm
    (Length x Depth x Height)

    Package size    :
    Backrest element 1:     970 × 135 × 90 mm

    Watch animation 

Puro Backrest element 2

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  • Thermo Aspen

    Softly rounded corners provide pleasant support for the back.

  • Alder

    Thanks to the rounded edges, the backrest slats do not press against the body but instead follow its contours naturally and gently.

  • Aspen

    Assembly is really quick and easy; you don't need professional skills to create a sturdy and beautiful finished product.

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Buy

  • The construction is the same as in all OTSO Puro elements: the parts are joined together using 8 mm wooden dowels. Assembly is quick and easy; you do not need professional skills to create a sturdy, beautiful finished product. True to its name, the backrest element serves as a backrest, but it can also be used as a cover panel between the upper and lower benches.
    The elements can be shortened.
    Supplied in parts.

  • Modifiability: The elements can be easily shortened or modified as required.

    Measurements:
    576 mm x 56 mm x 300 mm
    (Length x Depth x Height)


    Package size    :
    Backrest element 2:    580 x 135 x 90 mm

    Watch animation 
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Puro Corner element

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  • Thermo Aspen

    With OTSO Puro Corner Elements, you can effortlessly create a variety of corner solutions for both saunas and changing rooms

  • Alder

    All while maintaining a cohesive and refined design.
    The element are delivered flat packed.

  • Aspen

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  • 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.

  • 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

    Watch animation 
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Puro Sauna bench end panel

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  • Thermo Aspen

    1200 × 580 mm – a flexible solution for sauna benches. 

  • Alder

    This high-quality sauna bench end panel makes building and modifying sauna benches easier.

  • Aspen

    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.

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  • 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.

  • Features
     

    • 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
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Puro Sauna bench end panel add-on

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  • Thermo Aspen

  • Alder

  • Aspen

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  • 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
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Frame unit andInstallation kit

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  • 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

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  • Frame Unit

    The package includes:

    • 2 pcs 39 x 66 x 2400 mm frame timber
    • 4 pcs zinc 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 zinc steel frame brackets
    • 4 pcs 5x20 mm zinc steel screws
    • 4 pcs 6 x 50 mm zinc-plated Lag screws
    • 6 pcs adjustable feet
    • 10 pcs nailing plates
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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. 

See the whole collection

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

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