SONAR System
VAT included.
Leadtime 4-5 weeks ( made to order )
CUBE: H 400 mm W 500 mm D 350 mm
BODY: H 500 mm W 750 mm D 350 mm
Shipping within and outside the EU:
Many of our products are individually manufactured after the order is placed. You can find the respective delivery times directly on the product page – generally between 3–7 weeks, depending on the size of the object and our production capacity.
Shipping is carried out exclusively with FedEx or TNT, our reliable partners for high-quality and secure delivery.
Deliveries within the EU: free of charge
Deliveries outside the EU (e.g., USA, Canada, UK): shipping costs are calculated at checkout
We will inform you via email as soon as your object has been shipped and provide you with all tracking information.
Returns:
All orders are carefully packaged and shipped with our selected shipping partners. Many of our products are made to order to ensure the highest quality and precision.
The respective delivery time is stated in the product description.
Returns:
We accept returns within 10 days of receiving the goods.
Please note:
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The customer bears the cost of the return shipment.
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The product must be returned unused, undamaged, and complete in its original packaging.
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Since some items are made to order, we reserve the right to refuse returns in the event of signs of use or damage.
To initiate a return, please contact us in advance by email. We are happy to assist you with every step.
If the item is not returned in its original condition, the buyer is responsible for any loss in value.
Cancellation:
Cancellations are not accepted.
Please contact form & eisen if you have any problem with your order at office@form-eisen.at.
SONAR
A sculptural furniture system defined by clarity, balance, and architectural presence.
Crafted from 2 mm brushed stainless steel, SONAR explores the relationship between open and closed volumes — creating compositions that feel both minimal and monumental at the same time.
Rather than functioning as conventional furniture, SONAR is designed as a modular object system that quietly shapes the atmosphere of a space through proportion, reflection, and materiality.
The Cube
The SONAR Cube forms the foundation of the system.
Open on one side and closed on the back, it creates space for vinyl records, books, and curated objects while maintaining a calm, architectural appearance.
Its exterior surfaces are brushed by hand, while the interior receives a subtle Scotch finish that softens reflections and gives the material additional depth.
Each Cube is fully welded, precisely refined, and individually finished in our workshop — resulting in seamless edges, balanced proportions, and a distinctly tactile surface.
Whether used alone or combined with additional modules, the Cube naturally integrates into evolving compositions and changing interiors.
The Body
The SONAR Body introduces weight, tension, and visual balance to the system.
Defined by its monolithic form and seamless geometry, it is the most complex element within the SONAR collection — requiring extensive manual welding, grinding, and brushing to achieve its clean architectural appearance.
When combined with the Cube, the Body slides partially into the open structure, creating a sculptural interplay between solid and open space.
The result is a composition that feels calm, precise, and intentionally reduced.
Modular Compositions
SONAR is designed to evolve with its environment.
Modules can function independently as sculptural side tables and display objects, or combine into larger architectural furniture arrangements with open and closed volumes.
No fixed configuration.
No predefined limitation.
Each composition becomes an individual interpretation of the system.
Material & Craftsmanship
Every SONAR piece is handcrafted in our own workshop from brushed stainless steel.
The material was chosen not only for its durability, but for the way it interacts with light, space, and surrounding architecture over time.
Clean surfaces, subtle reflections, and precise edges give each module a quiet but unmistakable presence.

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