About this product
Quadrant Soft Modular Sofa — Sustainable, Flexible Seating for Workplaces & Learning Environments
Originally inspired by the relaxed comfort of baggy jeans, the Quadrant Soft Sofa is Koskela’s iconic modular seating solution for corporate workplaces, universities, creative environments and homes. Designed and manufacture in Australia since 2009, it brings together long-lasting comfort, reconfigurable design, and creative expression.
Each module is crafted from dense yet extremely lightweight foam, making it easy to move, reconfigure, and adapt to evolving needs — no tools or heavy lifting required. Whether you’re refreshing a breakout area, creating a quiet reading nook, or rethinking an entire floor plan, Quadrant is built for agile spaces.
What sets Quadrant apart is its creative flexibility — mix and match fabrics across modules to create a bespoke look tailored to your interior scheme. Over time, you can easily swap out covers to refresh the aesthetic or adapt to changing seasons, with the option to purchase extra covers for summer and winter styling. This reduces waste and extends the product’s life while offering practical, low-cost ways to rejuvenate your space.
Covers are removable and dry-cleanable, making maintenance simple. And thanks to Koskela’s repair and renew program, parts can be replaced individually, minimising environmental impact and keeping your sofa in use for longer.
Leather cross-stitches and embossed handles provide signature design touches that speak to quality and craft.
Key Features:
- Australian Made – Designed and manufactured locally to support Australian industry and ensure high-quality craftsmanship
- Fast Lead time - 8 weeks manufacturing time
- Modular Flexibility – Available in single, double, corner and Ottoman modules to suit a wide range of spatial layouts and allowing for reconfiguration as workplace needs evolve
- Lightweight – Manufactured from dense but lightweight foam - making it easy to move, reconfigure, and adapt to evolving needs
- Mix and match – Fabrics, colours and textures across different modules to create a look that’s completely tailored to your space
- Removable Covers – Zip-off seat and back covers that can be spot cleaned, dry cleaned, or replaced to extend product life. Extra covers can be purchased to update your sofa to adapt to different seasons (eg. Winter / Summer covers)
- Built for Repair – For sofas that aren’t compatible with removable covers (purchased prior to November 2021) Sofas can be retrofitted and reupholstered to adapt to removable covers
- Designed for modern spaces– Ideal for collaborative zones, breakout areas, and reception spaces in modern offices and universities
- Customisable heights – Available in two different heights - Standard (730H) and High (810H)
- Customisable arrangements – Also available in our original Standard range of modules
- GECA certified
Show

*Renders are indicative only. Finishes and materials must be selected when ordering
Product information
Materials
- Body is foam
- Upholstery in your choice of fabric
- Cross-stitches and handles are leather
- Black industrial zip
Customisations
- Commercial grade fabric
- Plinth addition
Contact sales@koskela.com.au to talk about customising this piece.
- Workplace
- Open plan spaces
- Collaborative spaces
- Spaces with small footprint
- Designed for disassembly - Replace or upgrade components instead of replacing the entire unit.
- Repair & Renew Program - Ability to repair, reupholster and renew all our products
- Warranty - 7 year warranty on all our products
- Rehome Program - Trade in products you don't need to gain Koskela credit for products you do
- Koskela + Subscription - Using Koskela + subscription, you can get high quality, egonomic furniture delivered, installed and maintained for a tax deductible low monthly fee.
- Australian designed and manufactured
- GECA certified
Login or apply for access to show these details.
In the eastern states and territories of Australia (NSW, ACT, VIC & QLD) the lead time in 8-10 weeks. For all other states and territories, the lead time is 10-12 weeks. This lead time is for standard products only.
Koskela has a faster lead time than average because our products are made in Australia. If you need products in a hurry, just give us a call and we can see what can be done. Or check out the ready-to-ship range, which is available now.
Shop ready-to-ship
- Size
- Table top finish
- Power and USB integration
- Planter box
Koskela furniture can be delivered anywhere in the world and shipping will be calculated when you place an order.
Koskela has an in-house Project & Product team who will manage your delivery; providing Estimated time of Departure (ETD) updates and working with an organisation’s facilities manager or equivalent to ensure the process is as smooth as possible.
For delivery and installation, Koskela uses reusable packaging, which we remove from site to keep using.
Why choose me

Made in Australia
All Koskela products are proudly made in Australia. By supporting us you also support our manufacturing partners who employ highly skilled workers that can execute custom and bespoke furniture designs.

AfterCare™
Koskela products can be serviced to keep them looking like new and extend their life. Components are repairable or replaceable, so you can swap out a part rather than having to repurchase the whole. In most cases, this maintenance can happen onsite, reducing disruption and delays.

Continuously improving
Koskela has ISO 9001: 2015 Quality Assurance and ISO 14001: 2015 Environmental Management certification. This certification provides independent verification to our stakeholders and customers that Koskela is committed to quality and improving environmental performance.

GECA Certification
GECA is an Australian-based certification scheme, which ensures that products and services have a reduced environmental impact throughout their lifecycle. Qualifying Koskela products contribute towards environmental project schemes such as Green Star, LEED and WELL.