FLAT Plus
Versatile against noise
- Extra fine-pored thermoset acoustic foam for maximum sound absorption
- Extraordinary heat and flame resistance conforming to fire protection class DIN 4102 B1
- Formats: 100 x 50 cm, 120 x 58 cm, 60 x 60 cm with a flat surface in various material thicknesses
- Available in white grey and titanium grey
- Various possible uses, e.g. sound insulation in public facilities / buildings, offices, schools, kindergartens, restaurants
Your choice:
Sound absorber FLAT Plus – Premium sound absorber with a flat surface
- Sound absorber with flat surface made from Duromer acoustic foam with fire protection class DIN 4102 B1
- High sound absorption even with relatively small material thickness
- Extremely versatile, both for sound insulation and soundproofing

Product data
More information about the fire classes of our sound absorbers is available the relevant aixFOAM knowledge article.
- Without
- STICKY. Makes your aixFOAM self-adhesive.
- upFRAME (The frame for your absorber) without accessories
- upFRAME with GoodVibes (Vibration dowel for decoupled wall mounting)
- upFRAME with HANGER (The clever hanging system)
- upFRAME with HANGER grace (The exclusive hanging system)
More information about this is available in our relevant aixFOAM knowledge article about the subject "What is a shadow joint?".
In the production (foaming) of this acoustic material different sized pores (voids) can arise. Voids are typical for the material, do not represent a quality defect and do not affect the acoustic properties of the absorber.
More information about this product is available, if required, in the accompanying datasheet. We are happy to provide you with this upon request.
For those who expect more - aixFOAM Premium sound absorbers
Our sound absorbers made of thermoset acoustic foam are the ideal solution for rooms with particularly high soundproofing and fire protection requirements. They owe their unsurpassed acoustic properties to the extremely fine, open pore structure that almost completely absorbs sound. They are flame retardant without the addition of flame retardants and thus meet many regulations to ensure fire safety in public buildings.

- Maximum sound absorption
- Flame retardant according to DIN 4102 B1
- Form-stable and colour-fast – no yellowing!
- Very low weight
- Antistatic, fibre-free and elastic
Absorption values
The measurements of the sound absorption coefficient were determined according to DIN EN ISO 354 (reverberation room) and refer to an absorber area of 100 cm x 50 cm.
Sound absorption coefficients for FLAT Plus in white-grey
Frequency range |
![]() Height 2 cm |
![]() Height 3 cm |
![]() Height 4 cm |
![]() Height 5 cm |
![]() Height 8 cm |
![]() Height 9,6cm |
---|---|---|---|---|---|---|
125 Hz | 0,08 | 0,09 | 0,10 | 0,20 | 0,23 | 0,32 | 250 Hz | 0,19 | 0,29 | 0,37 | 0,55 | 0,77 | 0,91 |
500 Hz | 0,48 | 0,62 | 0,85 | 1,05 | 1,00 | 1,02 |
1000 Hz | 0,80 | 0,83 | 0,89 | 1,10 | 1,11 | 1,10 |
2000 Hz | 0,82 | 0,85 | 0,94 | 1,20 | 1,21 | 1,12 |
4000 Hz | 0,89 | 0,93 | 1,01 | 1,20 | 1,19 | 1,21 |
Frequency range |
![]() Height 2 cm |
![]() Height 3 cm |
![]() Height 4 cm |
![]() Height 5 cm |
![]() Height 8 cm |
![]() Height 9,6cm |
---|---|---|---|---|---|---|
125 Hz | 0,07 | 0,08 | 0,14 | 0,18 | 0,31 | 0,30 | 250 Hz | 0,14 | 0,18 | 0,31 | 0,47 | 0,71 | 0,76 |
500 Hz | 0,23 | 0,40 | 0,57 | 0,75 | 0,93 | 0,97 |
1000 Hz | 0,42 | 0,66 | 0,76 | 0,87 | 0,97 | 1,01 |
2000 Hz | 0,65 | 0,80 | 0,85 | 0,95 | 1,01 | 1,00 |
4000 Hz | 0,78 | 0,89 | 0,90 | 0,98 | 1,02 | 1,02 |

Profit from sound insulation directly from the manufacturer!
At aixFOAM we make sound insulation for applications in room acoustics and technical acoustics. And because we do this particularly well, we have been doing it for 60 years. Over this time we have been constantly working on the further development of our products and therefore are able to offer you highly effective sound absorbers in a modern design.
Our aixFOAM philosophy: We combine customer-oriented advice with the individual, needs-based production of sound insulation solutions. Or in other words: We help you with free advice to find the ideal sound insulation for your project and start to make your absorbers directly after receiving your order. You then receive your sound insulation directly from the factory – naturally in the best quality.
- Use of high quality acoustic foams from Germany
- Precision manufacturing on the latest CNC cutting machines and systems
- Standard solutions or individual small and series manufacturing of noise insulation
- Advice, planning, production and brokering of assembly partners

"Made in Germany"
in a few days
soundproofing experts

‘SH001 is a very effective sound absorber – even at small material thicknesses. It is extraordinarily heat and flame resistant and corresponds to the fire protection standard DIN 4102 B1, which applies to most public buildings. In this way it not only reduces sound, it also guarantees the necessary safety in the worst case.’
Holger Thoma, customer advisor
Do you need help or do you have any questions about the product?
Use our help area with brief answers to the most frequently asked questions from our customers.
Of course we are happy to help you with advice, free of charge.
+49 2403 / 83830 - 22
Monday to Friday
08:00 o'clock to 17:00 o'clock
sales@aixfoam.com
Daily from 00.00 – 24.00 o'clock