Play with contrast and rhythm. Combine wood veneers with coloures directly in the system. The Mix System gives architects design freedom while maintaining perfect alignment.
The image shows Gustafs Linear Rib and Feltfon Blox.


DESIGN YOUR OWN COMBINATION
Create endless linear expressions by combining Feltfon Ribs, Veneered Gypsum Ribs, and F-line linear lighting in any rhythm or variation. Add Feltfon Acoustic Baffles or fully veneered Blayde elements for elegant grill or baffle ceiling designs with acoustic and visual harmony. Mix models, widths, depths, lengths, materials, felt colours, and authentic wood veneers – but do not compromise with emissions, fire safety, acoustics and user friendliness
TYPE / SOLUTION
Linear System, Linear Mix System
APPLICATION
Ceilings
Acoustic class
A, B, C, D
Fire Class
A2-s1,d0, B-s1,d0
INSTALLATION
CAPAX MIX
With the Mix System, you can design freely and combine:
Linear Ribs, different Feltfon products, lighting and Blayde.
Lighting fixtures click directly on the ceiling grid profiles or integrate flush with Feltfon® Baffles and similar.
Mix materials and finishes, from real wood veneer to acoustic felt.
Play with contrast and rhythm. Combine wood veneers with colours or integrate linear lighting directly in the system. The Mix System gives architects design freedom without a hassle. For peace of mind.
The Mix installation system allows many different Gustafs products to be installed on the same ceiling carrier profile.
Linear Mix Installation Guide →
With the Capax MIX System, you can freely combine different Gustafs products — from veneered Linear Ribs and Blayde to soft Feltfon Ribs , Baffles, DNA etc. Mix widths, depths, materials, and colours to design unique linear expressions with perfect alignment. The system also integrates seamlessly with F-line LED profiles, allowing you to blend light, texture, and acoustics into one unified ceiling design.
Blayde with ash veneer and Feltfon Baffles in the colour baked clay.
Featured products in the installation:
Combination of Linear Rib-R in walnut veneer and F-Line C.
Featured products in the installation:
Feltfon Baffles and Blayde are installed in square modules, oriented perpendicular to each other, creating a ceiling with strong visual impact.
Featured products in the installation:
By using the Mix installation system you can place Feltfon Blox in your Linear Rib installation.
Featured products in the installation:
By combining Feltfon Rib with a Rib-S ceiling and integrating F-Line C lighting, while shifting the starting point of the ribs, a subtle wave pattern is created across the ceiling. The installation highlights the flexibility of the Mix system, where standard components and lighting can be easily combined to create unique ceiling expressions through simple design decisions.
Featured products in the installation:
Combination of Blayde in birch veneer and F-Line R in the colour baked clay.
Featured products in the installation:
By using the same veneer across different dimensions or products, it is easy to create a calm and cohesive ceiling that still makes a strong visual impression.
Featured products in the installation:
By combining Feltfon Rib, in the colour dirty yellow, with a Rib-S ceiling in birch and shifting the starting point of the ribs, a subtle wave pattern is created across the ceiling. The installation illustrates the flexibility of the Mix system, where standard components can be easily combined to shape unique ceiling expressions through simple design decisions.
Featured products in the installation:
Both functional and beautifull. A combination of Blayde in Cherry veneer, Feltfon Ribs and F-Line R lighting gives a perfect acoustic and luminating ceiling .
Featured products in the installation:
Match ceiling with walls, Gustafs Linear Rib Narrow 22 mm wide 28 mm deep, combined with F-Line R and Feltfon linear ribs.
Acoustic felt backing in the colour Wet sand. The walls is cladded with Gustafs acoustic Nano Panels.
Featured products in the installation:
Our designs and surfaces are constantly evolving. Choose from a wide range of veneers, laminates, painted solid colours or felt to achieve a unique design. The flexible inhouse production at Gustafs will realize your ideas and designs with almost no limitations. Surface materials and surface finishes are 99% of what you see of our products, so we decided to be leading experts in these fields.
Customized veneers orGustafs standard veneer collections Nature & Gemini. For customized effects, vary the gloss or pigmentation of the surface finish.
Our industrial finishing process delivers a painted surface that is difficult to achieve on site. As an alternative to veneer or paint, coloured and décor foils are available for our ribs.
The felt in Feltfon and F-Line-R is available in a wide range of carefully selected tones.

Combination of Feltfon Blox and Linear wooden ribs.
The Gustafs Linear Mix System opens up new design possibilities across the entire Gustafs Linear family. Within one mounting framework, you can combine Ribs, Blayde, all Feltfon products (Ribs, -DNA, -Diabolo, -Baffles, Blox), and F-Line – integrated lighting — within one seamless ceiling design. Create distinctive patterns, play with dimensions, materials, and surfaces, and achieve a refined architectural expression with perfect acoustic performance.
Combine products that offer different dimensional expressions — all installed using the same Ceiling Mix system. Each product provides a range of surface options, from real wood to felt. Achieve unique acoustic performance by blending sound-absorbing and sound-reflecting elements.
The Ceiling Mix system offers a wide variety of compatible solutions. Width options range from Blayde 13 mm to Feltfon Linears 598 mm, allowing extensive design flexibility.
Spacing plays a key role in linear design. Varying and combining different spacing widths adds character and dimension to the ceiling. Wider gaps can create a calmer appearance, reduce material use, and often improve acoustic performance.
A Gustafs Mix ceiling can be much more than a repeating linear layout. Varying the in-line design introduces rhythm and visual interest, creating a more expressive design
Depth can be integrated into the ceiling design with ease and elegance. Vary the depth between different products or within the same product. Increased depth also allows for wider spacings and a more dynamic expression.
Explore the wide range of available finishes. Options include real wood veneers, solid colours, mirror effects, Natyrell, and Feltfon — giving you the freedom to shape the desired look and atmosphere.
Spacing — and the colour within it — can dramatically influence the overall impression. That is why we offer a wide selection of coloured acoustic backings. The Mix installation system is designed to integrate these layers seamlessly, without affecting the rest of the installations process.
Lighting should enhance your design effortlessly. Gustafs F-LINE lighting can be easily added — either clicked into the ceiling spacings or fully integrated and recessed into Feltfon Baffles and similar elements.
Quality acoustics are achieved through the right balance of absorption, reflection, and diffusion. With the Linear Mix system, you can combine different Gustafs products — such as ribs, baffles, and Feltfon elements — to reach the desired acoustic result.
The performance depends on which products, dimensions, and spacings you choose, and can range from sound class C to A. By varying distances, depths, and materials within the same installation, you can fine-tune the room’s reverberation and create a rich, natural sound environment.
As with all Gustafs solutions, the Linear Mix System and its products are tested and certified for use in public environments.
Fire safety is a core principle at Gustafs. Every product is developed with a deep commitment to protecting both people and architecture. Our materials and constructions meet strict international fire safety standards, ensuring performance without compromise.
For detailed information, each product page specifies its individual fire classification and test results.
At Gustafs, we take indoor air quality seriously. All our products are developed to meet the highest standards for low emissions, ensuring safe and healthy environments for people to work, learn, and live in.
Each product page provides detailed information about emission levels and certifications, so you can design with confidence and transparency.
Sustainability is at the heart of everything we do at Gustafs. It’s in our Swedish DNA to minimize environmental impact and take responsibility for future generations. Our production runs on 100% renewable energy, and our gypsum based products are made from 98 percent natural materials and up to 94 percent recycled content. All are free from flame retardants, added formaldehyde, and isocyanate binders.
Feltfon continues this commitment — produced with 100% fossil-free energy and made entirely from recycled PET bottles, it can itself be recycled multiple times.
Read more about our sustainability work and detailed product data on each product page or in our Knowledge Hub.
The Linear Mix system is designed for simplicity and accuracy. All products share the same mounting principle, making it easy to plan, combine, and install different elements with perfect alignment. Whether you mix ribs, baffles, or Feltfon panels, the result is always seamless and precise.
You can find detailed installation instructions for every product under the Installation tab, with clear guidance to ensure smooth, safe, and lasting performance.
Feltfon Rib, Wood Felt, Linear Rib-R, F-Line-C Rib Narrow 22 mm, Rib HD, Feltfon Baffle and Feltfon Blox, Blayde, Rib -R 88 mm, Rib-E 40mm, Fline R, Rib E, 22mm.
Capax is our unique aluminum profile installation system that provides you a concealed, reliable, quick and cost saving installation. The Quick-Up assembly system is a user friendly aluminum grid offering installation reliability and a perfect visual result. No tools are needed to assemble the interlocking components. A demountable version is available, ideal when access to the ancillary systems is required.
How to install Feltfon
How to install Blayde
How to install Rib-r & Rib-S
How to install Narrow (22 mm wide) Rib-R & Rib-S
How to install Rib-HD, 74 mm depth
How to install Rib-E
How to install F-line-C
How to install F-line-R
On our downloads page, you’ll find product sheets, technical data sheets, and CAD files for all products included in the Linear Mix system. Everything you need to plan, specify, and design with precision — gathered in one convenient location.