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- TRI FELT - PET Acoustic Panel
TRI FELT - PET Acoustic Panel

TRI FELT is part of DECIBEL’s collection of contemporary PET acoustic panels designed to improve both the sound and aesthetics of modern spaces. Its striking triangular geometry allows creative layouts that blend acoustic performance with visual rhythm, making TRI FELT a statement piece in interior design.
Made from recyclable polyester felt (65% recycled content), TRI FELT efficiently absorbs noise, reduces reverberation, and improves overall sound insulation. Perfect for offices, hospitality interiors, or creative studios, it transforms reflective spaces into calm and inspiring environments.
How It Works
TRI FELT panels absorb mid- and high-frequency sounds responsible for echo and speech distortion. Their triangular shapes diffuse sound reflections, helping create evenly distributed acoustics across any surface. Whether installed on walls or ceilings, TRI FELT boosts both acoustic comfort and aesthetic coherence.
Proven Acoustic and Environmental Performance
- Made from 100% polyester (65% recycled) felt
- Sound absorption performance up to NRC 1.00, depending on thickness and installation type
- Fire classification: B–s1, d0 (EN 13501-1)
- Low-emission, non-toxic, and fully recyclable
- Manufactured under sustainable and environmentally responsible processes
Design and Application Flexibility
TRI FELT panels can be arranged in repeating or asymmetric geometric layouts to create a distinctive visual impact while improving acoustic balance. Customisation options include size, thickness, colour, and pattern, ensuring seamless integration with any design vision.
Can be used as:
- Wall-mounted acoustic panels
- Ceiling baffles or suspended clouds
- Desk dividers or workstation partitions
- Hanging acoustic screens or full-surface wall coverings
Available in standard 500 × 500 mm dimensions (custom sizes available) and 6 / 9 / 12 / 18 / 24 mm thickness options, TRI FELT offers creative freedom for architects and designers. Panels are available in a full range of RAL colours to complement any interior style.
Key Specifications
- Material: 100% polyester (65% recycled)
- Dimensions: 500 × 500 mm (custom sizes available)
- Thickness: 6 / 9 / 12 / 18 / 24 mm
- Fire classification: B-s1, d0
- Colour: Available in RAL colours
Best Suited For
- Offices and coworking environments
- Recording studios, home cinemas, and creative spaces
- Hotels, restaurants, and bars
- Educational institutions and conference halls
- Residential interiors requiring both acoustic treatment and modern design appeal
Acoustic Design in Perfect Balance
TRI FELT turns geometry into an acoustic advantage. Its triangular form and felt texture combine to deliver effective sound absorption while adding sculptural dimension to walls and ceilings.
Contact DECIBEL today to discover how TRI FELT can redefine your interior acoustics.
Coefficient of sound absorption
Technical data
| Material | |
|---|---|
| Dimensions | 500x500 mm (custom dimensions available); |
| Thickness | 6 / 9 / 11 / 12 mm |
| Color | available in RAL colors* |
| Fire resistance | B-s1, d0 |
| The colors of the felt panels may exhibit slight variations in shade or hue compared to the specific RAL colors. |
|---|