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Gustafs / Feltfon / Feltfon Diabolo
Gustafs / Feltfon / Feltfon Diabolo

Feltfon Diabolo

ANGLED LINEAR FELT BEAMS for silent wave designs

Feltfon© Diabolo features beams set at various angles, creating a dynamic, undulating design reminiscent of a diabolo. These beams, with substantial depths, are constructed from a permeable felt material and include a hollow core, providing exceptional sound-dampening capabilities within a space. The demountable Capax installation system suitable for walls and ceilings, ensures durability in high-traffic environments such as schools, offices, shops, and malls. The installation profiles accommodate multiple beam widths and lets you adjust width, depth, colour, and spacing. Additionally, designers can personalize the appearance further by filling the spacings with wooden in-fill strips. As with all Gustafs products, Feltfon© Diabolo prioritizes safety, adhering to fire safety standards without the need for impregnations.

TYPE / SOLUTION

Feltfon Linear

APPLICATION

Ceilings, Wall, Wet rooms

Fire Class

B-s1,d0

Acoustic class

A, C, D

CONTACT
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Material

Gustafs Acoustex© 9 mm felt represents the next generation of textiles, crafted from a minimum of 50% post-consumer recycled material. This sustainable solution showcases our commitment to reducing environmental impact while maintaining exceptional quality.

Design

Feltfon Diabolo – the perfect blend of aesthetic elegance and superior acoustics for your walls or ceilings. Immerse your space in a beautiful wavy design that not only serves as a captivating art piece but also enhances acoustic performance. Feltfon Diabolo is a versatile choice for public interiors like offices or hotels.

A safe choice

Gustafs Feltfon System is specifically designed for public spaces, prioritizing safety and peace of mind. With its fire classification, B-s1,d0, this system makes little to no contribution to fire, ensuring a secure environment for all.

01 DESIGN EXAMPLE +
01 DESIGN EXAMPLE

Diabolo used as an eye-catching and sound absorbing room divider.

02 FELT COLOURS +
02 FELT COLOURS

Available in many colours.

COLOUR PALETTES >>

03 PRODUCTION +
03 PRODUCTION

Cutting edge innovation produced in Sweden.

Acoustics

9 mm of felt thickness means 9 mm of air permeable material. Together with the hollow core, Feltfon Diabolo is a super absorber up to class A.

Recycled & Upcycled

Feltfon is made from recycled PET bottles and can be re-cycled multiple times. Feltfon is produced with 100% fossil free energy.

Wet rooms

Feltfon can be used in humid environments such as indoor gyms, pool areas and spas. Areas where you often want to eliminate disturbing sounds.

Explore more of the Feltfon product range

Feltfon Diabolo is based on Feltfon Linear Rib and can easily be combined with other Feltfon products.
The other Feltfon products using the same installation system are Intersections, Slash, Layers, Pixel, Blox, Baffles, DNA and Curves.

FELTFON LINEAR RIB

FELTFON INTERSECTIONS

FELTFON BAFFLES

FELTFON DNA

Create a unique sound absorbing surface in felt

Feltfon Diabolo’s wavy design enhances the acoustic performance and gives your space a unique look.
The length of the ribs is 2400 mm and the standard width of each Diabolo rib is 71 mm.

Dimensions

LENGTH: Max. 2400 mm
RIB WIDTH: 71 mm

Spacing

Using the Gustafs Quick-Up Capax System we recommend spacings of 22 mm for Feltfon Diabolo.

Wooden in-fill strips

The Gustafs wooden in-fill strips are designed to be placed within the spacing between the Diabolo beams.

STANDARD DIMENSIONS

RIB WIDTH: 71 mm, LENGTH: 2380 mm

Diabolo Rising section
MODEL LOWEST DEPTH HIGHEST DEPTH TOTAL RIB DEPTH
40-40 40 40 mm 40 mm
40-60 40 60 mm 60 mm
40-80 40 80 mm 80 mm
40-100 40 100 mm 100 mm
40-120 40 120 mm 120 mm
40-140 40 140 mm 140 mm
40-160 40 160 mm 160 mm
40-180 40 180 mm 180 mm
40-200 40 200 mm 200 mm
40-220 40 220 mm 220 mm
40-240 40 240 mm 240 mm
40-260 40 260 mm 260 mm
Diabolo Shifting section
MODEL LOWEST DEPTH HIGHEST DEPTH TOTAL RIB DEPTH
60-240 60 240 mm 240 mm
80-220 80 220 mm 220 mm
100-200 100 200 mm 200 mm
120-180 120 180 mm 180 mm
140-160 140 160 mm 160 mm

 

SECTIONS

WIDTH Rising section 11 psc: 1001 mm

WIDTH Shifting section 12 psc: 1094 mm

Feltfon Acoustic Felt – Green Acoustics made from rPET

Feltfon, Gustafs Acoustex – recycled PET is a next generation textile crafted from a minimum of 50% recycled PET bottles. The bottles are chipped into flakes and combined with fresh PET material. This innovative process ensures optimal reprocessing of PET, making it an environmentally-friendly choice. Furthermore, Feltfon is a 100% recyclable solution, emphasizing its commitment to sustainability.

KNOWLEDGE HUB / COLOUR PALETTES

01 STANDARD COLOURS +
01 STANDARD COLOURS

COLOUR PALETTES >>

02 STURDY & SOFT +
02 STURDY & SOFT

With a 9 mm thick felt with a high density of 2 kg/m², Diabolo beams will survive on walls in all types of public spaces.

03 THE PERFECT LOOP +
03 THE PERFECT LOOP

Our Acoustex rPET felt material can be re-processed repeatedly. Feltfon Linear can be de- and re-mounted multiple times – for circular use.

Gustafs Feltfon acoustics

Design something new with acoustic absorption coefficients up to the highest possible class A. A sound investment for the right kind of echo.

 

KNOWLEDGE HUB / ACOUSTICS

 

 

Acoustic absorption Feltfon Ribs, 40 x 40 mm, total depth 50 mm
APPLICATION SPACING INSULATION αw / NCR
Wall 22 mm Acoustex 9 mm 0,55-D/ 0,80
Acoustic absorption Feltfon Ribs, 40 x 40 mm, total depth 95 mm
APPLICATION SPACING INSULATION αw / NCR
Wall 22 mm Acoustex 9 mm + 45mm mineral wool 0,95-A/ 0,95
Acoustic absorption Feltfon Ribs, 40 x 40 mm, total depth 250 mm:
APPLICATION SPACING INSULATION αw / NCR
Ceiling 22 mm Acoustex 9 mm + air void 201 mm 1,00-A / 0,95
Ceiling 22 mm air void 211 mm 0,60-C / 0,65

Fire safety

Rest easy knowing that Feltfon Linear is fire-safe without the need for impregnations, prioritizing safety without compromising style.

Reaction to fire – classifications Gustafs Feltfon
PRODUCT REACTION TO FIRE
Feltfon Acoustex B-s1,d0
A SAFE CHOICE +
A SAFE CHOICE

Gustafs Feltfon System is specifically designed for public spaces, prioritizing safety and peace of mind. With its fire classification, B-s1,d0, this system makes little to no contribution to fire, ensuring a secure environment for all.

With our low emission Acoustex, you can breathe out.
And everyone else can breathe in.

Free from fire-retardants, added formaldehyde or isocyanate binders, the Acoustex material in Feltfon guarantees extremely low TVOC levels.

KNOWLEDGE HUB / EMISSIONS

Feltfon complies with the following building certifications
TVOC  required TVOC  result Formaldehyde required Formaldehyde result
BREEAM ≤ 0,3 (mg/m³) 0,01 (mg/m³) ≤ 0,01 (mg/m³) 0,005 (mg/m³)
LEED none U.S. ≤ 1,0 (mg/m³) 0,01 (mg/m³) < 0,06 (mg/m²h) 0,001 (mg/m²h)
BVB < 0,2 (mg/m²h) 0,01 (mg/m²h) < 0,05 (mg/m²h) 0,002 (mg/m²h)
M1 < 0,2 (mg/m²h) 0,01 (mg/m²h) < 0,05 (mg/m²h) 0,001 (mg/m²h)
Blue Angel ≤ 0,3 (mg/m³) 0,01 (mg/m³) ≤ 0,06 (mg/m³) 0,005 (mg/m³)

 

More Building Certifications >>

Green Acoustics

Sustainability is a fundamental part of our core and our target with Feltfon was to create a sustainable product that could match the good environmental credentials of all our other products. Feltfon is made from recycled PET bottles and can be recycled multiple times. Feltfon is produced with 100% fossil free energy.

KNOWLEDGE HUB / SUSTAINABILITY

READ MORE ON GREEN GUSTAFS

01 RECYCLED FELT +
01 RECYCLED FELT

Certified minimum 50% post-consumer rPET, granulated and spun into new Gustafs Acoustex 9.0.

02 RENEWABLE ENERGY +
02 RENEWABLE ENERGY

Producing in Sweden and surrounded by hydro power plants this is the main energy source for our production. The only other two are wind and solar power, adding up to a fantastic 100% renewable energy.

03 ENVIRONMENTAL DECLARATIONS +
03 ENVIRONMENTAL DECLARATIONS

Our products are environmentally declared and have all documentation in place to comply with leading building assessments like BREEAM and LEED.

Details that make the difference

Linear Accessories are unique details to be combined with your wall or ceiling system. Our linear accessories complete your vision and simplifies complicated solutions.

F-Line – linear lighting for Feltfon Linear

Integral linear lighting solution for Gustafs Feltfon© Linear Ceiling System. The lamp housing snaps to the same carrier profile as the Feltfon© ribs. F-Line uses a modern micro prismatic dimming in combination with high-quality LED light sources.

F-Line Spot – spot lighting for Feltfon Linear

Integral spot lighting solution for Gustafs Feltfon© Linear Ceiling System. The lamp track snaps to the same carrier profile as the ribs. Comes with a modern micro prismatic dimming and high-quality LED light sources.

Insulation – Acoustex 9,0 – Sturdy acoustic felt for multiple use

Extremely form stable acoustic backing in a wide range of colours and with fire class B-s1,d0. Can be used as an individual sound absorber or integral as the acoustic insulation layer behind Gustafs Feltfon Linear System for walls or ceilings. Supplied in sheets in various formats. Contains minimum 50% recycled PET bottles and is approved by all international standards regarding indoor climate emissions. Thickness 9,0 mm.

Wooden in-fill strips for Feltfon Linear

Combine the wool look of Feltfon© with beautiful wooden in-fill strips. Available in the following dimensions (depth x width x length): 13 x 23 x 2400, 13 x 54 x 2400 and 13 x 85 x 2400 mm. The wooden in-fill strip leaves 10 mm of visible rib depth in combination with a 40 mm deep Feltfon© rib, 30 mm visible depth in combination with a 60 mm deep rib, etc. Choose from our palette of veneers.

Covers

Varying types of covers and windowsills are needed in almost any interior fitting project. Gustafs will perfectly match the correct specifications and needs for your project, as well as the surface and finish.

Plinths

Plinths are the definite finish of a rib installation, not only regarding a nice design but also concerning the protecting function, for example against wet floor cleaning. Contact us and we will fulfill the specifications of your project.

Installation Feltfon Linear

All Feltfon Linear, Feltfon Vector and Feltfon Blox are installed with the same Capax system which makes it easy to mix different models and create your own designs. The Capax Quick-Up installation system is available for walls and ceilings. The Capax installation system for Feltfon guarantees reliability and a perfect visual result.

INSTALLATION

Easy to install

Capax is our unique aluminium profile installation system that delivers a concealed, reliable, quick, and cost saving installation. The Quick-Up system is user-friendly and available for walls and ceilings. No tools are needed to assemble the interlocking components. Both the wall and ceiling system are demountable, ideal when access to the ancillary systems is required.

WALL INSTALLATION FELTFON

CEILING INSTALLATION FELTFON

Avoid devalue engineering of your design

Gustafs has comprehensive, accredited test data for a wide variety of criteria such as fire, acoustics, emissions and many others. We tick all the boxes to comply your project with todays modern building standards. However, the following documents are not available for direct downloading. Please send a request or contact us or our country representatives for more information.

SEND REQUEST FOR CERTIFICATIONS

Available certifications for Feltfon Acoustex 9,0

Fire
+

Reaction to Fire: B-s1,d0

Acoustics
+

Configurations possible to achieve absorption class A, C or D. NRC: 0,60, 0,80, 0,95.

Environmental performance certification program for buildings
+

BREEAM
LEED
BVB
Svanen (Nordic Eco)
Sunda Hus

Emissions
+

Class E1 and M1. Approved for BREEAM International / LEED v4.1 / Svanen / Byggvarubedömningen / Sunda Hus / Blue Angel / AgBB / Belgian VOC / French VOC.

Declaration of Performance
+

DoP: Yes

FSC®
+

The wooden in-fill strips is available with FSC® (Forest Stewardship Council®) certified wood.
Gustafs FSC® certificate code is: SAI-COC-010919

READ MORE KNOWLEDGE HUB FSC® >>

And More
+

Added Urea formaldehyde: No
Isocyanate binders: No
Life Time: > 50 years
Recycled content: > 50% Post Consumer

Downloads

CAD
Feltfon Diabolo CAD | .zip
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CAD-FILES
PRODUCT SHEETS
Feltfon Diabolo | .pdf
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ACOUSTIC VALUES
Gustafs products | .pdf
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TECHNICAL DATA SHEET
Technical Data Sheet Feltfon | .pdf
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