12 mm PET Felt Acoustic Panels – Large 280 cm Format, Sound Absorbers and Made-to-Measure Wall Cladding
The vitAcoustic 12 mm PET felt acoustic panel is the larger, slightly thicker sister of our 9-mm base panel. Its large raw format of 2800x1225x12 mm is its key advantage: it allows you to clad floor-to-ceiling surfaces with a single panel – without joints or visible seams, creating a continuous, visually calm wall surface at typical ceiling heights.
At around 2.4 kg/m², the 12-mm panel is denser and heavier than the 9-mm version – making it even more dimensionally stable, giving it a higher-quality edge, and providing sound absorption across a slightly broader frequency range. It can also be cleanly sawn and cut to size with standard woodworking equipment. In all other technical respects, it is identical to the 9-mm panel.
Why the Mounting Configuration Determines Absorption
Like any soft fibrous absorber, PET felt “slows down” sound as air flows through its open felt structure and loses energy. Directly against a hard wall, however, there is very little air movement – even a thick panel absorbs only high frequencies there. Only an air cushion behind the panel allows the air to move, enabling the felt to work where it matters in everyday use: in the human voice range (around 200–500 Hz).
That is why performance depends less on material thickness than on the air gap or backing structure. However, the slightly greater thickness of the 12-mm panel provides a noticeable benefit: it absorbs across a broader frequency range and achieves one sound absorption class higher than the 9-mm panel when mounted with an air gap.
Acoustic Performance (Tested to ISO 354, Rated to DIN EN ISO 11654)
The following values apply to panels mounted flat – depending on the air gap. We provide both the weighted sound absorption coefficient αw and the commonly used NRC value:
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Directly on the wall: αw 0.25 / NRC 0.30 – sound absorption class E
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50 mm air gap: αw 0.60 / NRC 0.70 – class C
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100 mm air gap: αw 0.80 / NRC 0.80 – class B
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150 mm air gap: αw 0.90 / NRC 0.90 – sound absorption class A
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Nonwoven composite (12 + 40 mm) or ceiling cloud: sound absorption class A
All classes and performance values refer to the specified mounting method; measurements to ISO 354, rating to DIN EN ISO 11654. At large air gaps, physical cancellation in the mid-frequency range limits the calculated weighted single-number rating αw; practical absorption in the speech range of 200–500 Hz, by contrast, is very high.
The panels thus support compliance with DIN 18041 for reducing reverberation time and noticeably improve speech intelligibility. For the highest class A with flat wall mounting, we recommend the vitAcoustic nonwoven composite; for a suspended solution, our custom ceiling clouds.
Applications
Floor-to-ceiling wall cladding: The large format comes into its own wherever a seamless, continuous wall design is needed – in offices, reception and conference areas, hotels, or prestigious spaces.
Offices and open-plan spaces: Used as sound-absorbing wall cladding or suspended ceiling clouds, the panels lower noise levels, reduce reverberation, and improve speech intelligibility.
Hotels, restaurants, and commercial interiors: They provide acoustic comfort in lobbies, restaurants, and bars; in retail interiors, they serve as decorative, acoustically effective wall surfaces.
Medical and therapy practices: Greater privacy through reduced speech transmission – tested for harmful substances and hygienically safe.
Wall Cladding: Decorative, Acoustically Effective, and Thermally Insulating
As acoustic wall cladding, the PET felt panels combine design and function in a single layer. More than 50 colors are available, all with fire classification B-s1,d0 (flame-resistant to EN 13501-1). V-Cut textures and direct UV printing turn the panel into a customized wall surface – from a calm, solid-color surface to an image or logo.
The wall cladding performs two functions: it absorbs sound and provides interior wall insulation at the same time. The textile surface feels warmer than plaster, concrete, or glass and stays warmer than the cold wall behind it – a noticeable comfort benefit, particularly in rooms that are not heated continuously for cost reasons. A single material thus provides both acoustic comfort and a warmer feel to the room.
Configuration – One Product, Many Options
Each panel can be configured directly when you order. The options reflect our CNC machining capabilities and apply per panel:
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CNC cutting to size: multiple parts from one panel, including freeform shapes based on DXF files
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Chamfers and bevels: V-Cut chamfers (30°/45°) and mitered folding edges for clean corners and joints
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Duo – dual-layer 2×12 mm: creates a 24 mm thick panel (4.8 kg/m²), optionally in two colors. This makes virtually all colors available in 24 mm as well. (Similarly, the 9-mm panel produces 18 mm in Duo.)
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Nonwoven composite: 12 mm PET on 30/40 mm PET nonwoven for sound absorption class A with flat wall mounting
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V-Cut textures: Lines, Bricks, Triangle, and custom designs in various angles and depths. The grooves are more than a design feature: they increase the surface area and also scatter sound (diffusion) – reducing flutter echoes and allowing sound to decay more evenly throughout the room.
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Direct UV printing (CMYK): full-surface custom colors, designs, photos, or logos
Related material thicknesses include the 9-mm base panel (format 2440x1220x9 mm, 18 mm in Duo) and the 24-mm panel. Our ready-made vitAcoustic Elements offer more shapes and sizes (400x400x9 mm to 1200x1200x9 mm).
Colors, Availability, and Delivery Time
Our PET colors are divided into four collections – these determine stock location, minimum quantity, and delivery time, depending on color and material thickness (the same color may belong to a different collection depending on thickness). The collection is shown in the item number; you can see the current stock level, delivery time, and minimum order quantity for each item directly in the “PET Color” selection field.
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Standard & Trend: over 30 colors permanently stocked at our warehouse in Germany, with ongoing replenishment – available from 1 panel, with smaller quantities usually delivered in just 1–2 weeks, including cutting to size and machining
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Extended: also available from 1 panel, with a delivery time of approx. 6 weeks (rail freight). We stock several thousand panels in selected colors and thicknesses in Germany, and many times that number at our production site – because changeovers in PET manufacturing involve high setup costs, production is only economical in large quantities. This inventory investment is supported by the global market, not Europe alone; it enables us to provide the full range of colors and thicknesses
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Production: manufactured specifically for your project – from approx. 300 panels (in some cases from as few as 200). We can start a batch at any time, match any desired color, and supply custom dimensions; production runs continuously at a width of 244 cm, with crosscuts freely specified in both width and length
Fast delivery, including cutting to size and machining, is one of our strengths – especially for projects with tight deadlines.
In 12 mm, most colors currently belong to the Extended collection – the information shown in the dropdown is definitive.
Important transport and cost considerations: Due to its length of 280 cm, the 12-mm panel ships exclusively via freight forwarder (palletized freight), with an oversize-length surcharge – resulting in significantly higher transport costs. Liftgate delivery is not possible at 280 cm (liftgate service only up to 240 cm); a forklift should therefore be available on site for unloading. In economic terms, the large format is most worthwhile for projects starting at around 20–30 panels, where the seamless, floor-to-ceiling surface justifies the additional expense.
For smaller quantities, we expressly recommend our 9-mm panel in 2440x1220x9 mm format: suitable for palletized freight, quickly available from stock, and significantly less expensive to ship than the large 280-cm format – with almost equivalent acoustic performance and fully sufficient for most applications. (We keep the 9-mm panels in 2440x1220x9 mm in stock and can cut them to size immediately.)
Material and Manufacturing
The vitAcoustic PET felt panel is made from recycled PET plastic bottles, which are processed into textile fibers and laid into a fiber web using a felting process. This is then thermally bonded: a proportion of blended-in PET binder fibers (bicomponent fibers) partially melts in the oven and bonds the structure into a dimensionally stable panel – entirely without chemical adhesives or binders. The many colors and heathered effects are created by blending differently colored fibers before bonding. The recycled content is certified by SCS Global Services.
Note on the nonwoven composite: Unlike the rigid panel, the PET nonwoven backing is not thermally bonded. It remains soft and flexible and provides lower-frequency absorption in the composite, while the rigid panel forms the designed visible face.
Acoustics and thermal insulation in one: As a vapor-permeable PET fiber material, the panel also provides thermal insulation – especially as a nonwoven composite with our PET nonwoven: sound absorption and thermal insulation in a single assembly, for warm walls that do not feel clammy – also suitable for interior wall and sloped ceiling designs. We also offer the matching PET nonwoven separately: 30 mm and 40 mm.
- High areal weight (2.4 kg/m²) – densely compressed, dimensionally stable, and with a firm edge
- Unaffected by moisture and water-resistant
- Resistant to mold, pests, and dust mites
- Suitable for allergy sufferers – no volatile constituents
- Fully recyclable at the end of its service life
Fabrication and Installation
The panel is designed for use with standard woodworking tools: clean sawing and cutting to size (circular saw or jigsaw, oscillating knife). Various mounting systems are available depending on the application:
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Adhesive mounting: e.g., UHU Polymax High Grip, UHU por contact adhesive, or double-sided adhesive tape (CT-S 5735)
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Screws and staples: particleboard screws, staples
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Z-rails (Z-Clip): for removable, precisely aligned wall mounting
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Magnetic mounting: for panels that can be removed without tools from a magnetic substrate
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Ceiling suspension cables: for freely suspended ceiling clouds at the desired height
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Halfen channels: for baffles and wall baffles, including installation in rows
Cleaning and care: vacuum or wipe with a damp cloth, as with textile coverings. Stubborn grease stains can be dissolved with a little solvent thinner; coffee or wine stains can be bleached with hydrogen peroxide (H2O2) – without damaging the PET fiber or color.
Certificates and Standards
Tested for harmful substances and low-emitting: Our PET acoustic panels are GREENGUARD Gold certified (UL 2818) and meet strict limits for chemical emissions indoors. Formaldehyde emissions are well below the requirements applicable throughout the EU from August 6, 2026 (REACH Annex XVII). In addition, the materials are tested for substances of concern to health according to OEKO-TEX Standard 100.
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Flame-resistant to EN 13501-1 (B-s1,d0) – tested by TÜV-SÜD, equivalent to fire classification B1 to DIN 4102
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OEKO-TEX Standard 100 – tested for harmful substances, suitable for kindergartens, schools, and clinics
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Greenguard Gold – low VOC emissions for healthy indoor air
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EPD (Environmental Product Declaration) – relevant to DGNB and LEED certification
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SCS Recycled Content – certified recycled content
Technical Properties
| Property |
Value |
| Construction |
Single-layer PET felt, thermally bonded (binder fibers); optional dual-layer “Duo” = 24 mm |
| Material |
PET felt from recycled PET bottles, thermally bonded – without chemical binders |
| Thickness |
12 mm (Duo 24 mm) |
| Areal weight |
2.4 kg/m² (Duo 4.8 kg/m²) |
| Acoustic function |
Porous broadband sound absorber; performance adjustable through air gap/mounting configuration |
| Sound absorption class |
E directly on wall · C (50 mm) · B (100 mm) · A (150 mm, nonwoven composite or ceiling cloud) |
| αw |
0.25 (directly on wall) · 0.60 (50 mm) · 0.80 (100 mm) · 0.90 (150 mm); composite/ceiling cloud → A · to DIN EN ISO 11654 |
| NRC |
0.30 (directly on wall) · 0.70 (50 mm) · 0.80 (100 mm) · 0.90 (150 mm) |
| Frequency range |
Broadband; peak absorption in the low-midrange depending on air gap (speech range 200–500 Hz) |
| Edge finish |
CNC-cut edge; optional V-Cut bevel/chamfer (30°/45°, folding edge) |
| Surface texture |
Smooth or V-Cut (Lines/Bricks/Triangle); optional UV printing |
| Color configuration |
50+ design colors (12 mm predominantly Extended); Duo in two colors |
| Made to measure |
CNC cutting to size from 2800x1225x12 mm raw panel; freeform shapes based on DXF files |
| Fire classification |
Flame-resistant B-s1,d0 to EN 13501-1 (TÜV SÜD; equivalent to DIN 4102 B1) |
| Recycled content |
Recycled PET, content certified by SCS |
| Environmental declaration |
EPD (relevant to DGNB/LEED); GREENGUARD Gold (UL 2818, below REACH emission limit) |
| Harmful substance testing |
OEKO-TEX Standard 100 |
| Care |
Vacuum / wipe with a damp cloth; remove grease with solvent thinner, bleach coffee/wine stains with H2O2 (without damaging the material) |
Samples, Data Sheets, and Shipping
Free color samples are available in the Samples and Miscellaneous category. You can find technical data sheets, absorption values, and certificates in our download section. The large format ships as palletized freight via freight forwarder (oversize-length surcharge, no liftgate – a forklift should be available on site for unloading). For smaller formats that cost less to ship, take a look at our 9-mm panels.
Are you planning a project or do you need custom dimensions? Call us at +49 7248-93566-90 or email [email protected] – we manufacture to your specifications.
