Ceiling · Linear plank
AcoustiPlanks
Linear felt ceiling planks in 200 mm widths on the U-TONE substrate. Full 52-colour palette. Specify ceiling and wall from one system.
Learn more
U-TONE Range
Acoustic
Boards
Eleven boards. One substrate. One specification package.
0.90
Max NRC
52
Colours
B1
Fire Class
16
Install cities
The system
Rigid recycled PET felt boards, precision-machined to eleven surface profiles.
U-TONE acoustic boards are manufactured from dense-pressed recycled polyester felt: no fabric facing, no adhesive core. The surface pattern is machined directly into the board substrate, which is why colour and NRC performance stay consistent across all eleven types in the range.
One substrate means one colour catalogue and one set of test reports. Specify cut work wall boards and suspended ceiling baffles on the same project; the documentation does not split and the colour match is exact. Boards with a 25 to 50 mm air gap behind them improve low-frequency absorption beyond the rated NRC.
Recycled PET felt
Substrate across all 11 board types
52 curated
Colours, consistent across range
Class B1
Fire rating, BS 476 Part 7
4–8 weeks
Standard lead time from sign-off
Eleven boards
Acoustic wall and ceiling boards.
Seven wall boards and four ceiling boards on one recycled PET felt substrate. Mix types on the same project: one vendor, one fire certificate, one colour palette.
-
Wall · Perforated
Cut Work
UTC-CW
Geometric perforations in 40+ patterns with the widest NRC range in the U-TONE system. The most commonly specified acoustic board across offices, education, and healthcare.
- NRC
- 0.70–0.90
- Thickness
- 9 / 12 / 18 / 24 mm
-
Wall · Fluted
Fluted
UTC-FL
Vertical linear channels at 15 or 20 mm pitch. The specifier default for open-plan offices and hospitality lobbies. Directional scatter with strong mid-frequency absorption.
- NRC
- 0.75
- Thickness
- 9 / 12 / 18 / 24 mm
-
Wall · Grooved
Grooved
UTC-GR
Precision horizontal grooves preferred for boardrooms and executive suites. Stronger visual directionality than fluted; works equally in portrait and landscape.
- NRC
- 0.78
- Thickness
- 9 / 12 / 18 mm
-
Wall · Custom print
Printed
UTC-PR
Full-surface digital print on felt: murals, branding, or artwork on an acoustic substrate. No loss of absorption performance from the print process.
- NRC
- 0.72
- Thickness
- 12 / 18 mm
-
Wall · Inlay
Inlay
UTC-IN
Two-colour inlay machined from the same felt substrate. Logos or geometric motifs without paint or adhesive film. Two materials, one board thickness.
- NRC
- 0.74
- Thickness
- 12 / 18 mm
-
Wall · Three-dimensional
3D Wall
UTC-3D
Deep relief geometry in pyramid, wave, or faceted profiles. The highest NRC of any U-TONE wall board and the strongest visual presence in the range.
- NRC
- 0.82
- Thickness
- 36 mm
-
Wall · Modular
Jigsaw
UTC-JG
Interlocking modular boards that can be rearranged or replaced individually after installation. Site-trimmable without exposing the cut edge.
- NRC
- 0.76
- Thickness
- 12 / 18 mm
-
Ceiling · Suspended
Baffle
UTC-BF
Vertically suspended acoustic boards on adjustable stainless steel cables. Treats sound on both faces; effective in atriums, open-plan floors, and canteens.
- NRC
- 0.85
- Thickness
- 24 mm
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Ceiling · Horizontal
Cloud
UTC-CL
Horizontal floating acoustic boards for targeted absorption over workstations or meeting zones. Available in rectangular and custom plan shapes.
- NRC
- 0.85
- Thickness
- 24 mm
-
Ceiling · Open cell
Open Cell
UTC-OC
Grid-format open cell ceiling board that keeps services visible while delivering NRC 0.80 performance. Integrates with standard 600×600 mm ceiling grid systems.
- NRC
- 0.80
- Thickness
- 24 mm
-
Ceiling · Curved
Petal
UTC-PT
Curved petal-form ceiling boards in clusters or linear runs. NRC 0.85 with the strongest visual impact in the ceiling range.
- NRC
- 0.85
- Thickness
- 24 mm
Why PET felt boards
Acoustic boards compared.
PET felt, mineral wool, and foam are the three materials most commonly compared in Indian commercial specifications. Here is how U-TONE boards perform against them.
| Property | U-TONE Boards Recycled PET felt | Mineral wool boards Rockwool / Glasswool | Foam boards PU / Melamine |
|---|---|---|---|
| NRC range | 0.70–0.90 | 0.55–0.80 | 0.45–0.65 |
| Fire rating | Class B1, BS 476 Part 7 | Class A1 non-combustible | Typically unrated or Class C |
| Finished surface | Precision-machined architectural felt, 11 profiles | Fabric or perforated facing required | Exposed foam texture only |
| Customisation | 52 colours, print, inlay, CNC profile | None: concealed behind facing | Cut to size only, limited colours |
| VOC / off-gassing | None: thermally bonded, no adhesives | Binder off-gassing on install | Present in some PU variants |
| Recyclability | 100% PET recyclable | Recyclable in select variants | Not recyclable |
Certifications
Specification documentation, ready on request.
All eleven U-TONE board types share one fire certificate and one acoustic test report. Wall and ceiling boards specified together on the same project do not split the documentation.
Class B1
BS 476 Part 7 · Fire, every board type
ASTM C423
Acoustic absorption measurement
ASTM E84
Export and US green building
GeM
Registered · Government supply
52 colours
Curated with Colour Hive.
Neutrals, terracottas, slates, deep blues. The 52-colour range was developed with Colour Hive for corporate, hospitality, and institutional interiors. Custom dyeing is available at 200 m² minimum per colour.
Arctic White
Warm White
Alabaster
Oyster
Linen
Sandstone
Driftwood
Sienna Clay
Birch
Pewter
Slate
Graphite
Charcoal
Ebony
Blush
Terracotta
Rust
Bordeaux
Sage Mist
Forest
Teal
Steel Blue
Navy
Midnight
In situ
Acoustic boards across India.
Corporate campuses, government institutions, and hospitality venues. Unidus manufactures, ships, and installs each project in-house. No subcontractors.
Specified for
Specified by
What architects and designers say.
We specified U-TONE Cut Work boards across three floors of the campus expansion. Lead time held within the committed window and the installation team handed over clean. We have since respecified on two additional projects.
We had three vendors on the shortlist. Unidus won partly on cost, but mainly because their fire certification and NRC data covered both wall and ceiling boards on one document. That simplified the specification considerably.
The project required GRIHA compliance documentation. Unidus provided recycled content data and test reports within 48 hours. No other vendor on the shortlist responded that quickly.
Installation
No major civil intervention.
Unidus teams work in 16 cities. They manufacture the boards, ship to site, and handle installation. No subcontractors, no coordination overhead.
Concealed Z-clips
Aluminium Z-clips on wall battens; flush elevation, no visible fixings. Boards can be removed and repositioned without damage. A 25–50 mm air gap behind boards improves low-frequency absorption.
Impaling clips
Mechanical clips with spikes that secure boards directly to battens or substrate. Faster to fix than Z-clips on large unbroken elevations; boards are removable without damage to the face surface.
Direct adhesive
Acoustic-grade construction adhesive on flat prepared substrates. Fastest for large, permanent elevations. No battens required; minimal thickness addition to the wall build-up.
Specification
Dimension and performance.
Reference data for Cut Work (UTC-CW). NRC varies by board profile and thickness. Download the full catalogue for complete data on all eleven board types.
| Dimensions | 2400 × 1200 mm · 2400 × 600 mm · 1200 × 600 mm |
|---|---|
| Substrate | Recycled polyester felt |
| Recycled content | 88 PET bottles per m² |
| Density | 180–200 kg/m³ |
| NRC range | 0.70–0.90 (varies by board type and thickness) |
| Fire rating | Class B1 to BS 476 Part 7 |
| Disinfectability | Fog · spray · wipe |
| Mounting | Concealed Z-clips · impaling clips · direct adhesive · magnetic |
| MOQ | 12 m² per pattern |
| Lead time | 4–8 weeks from sign-off |
Test reports available on request. ASTM E84 available for export projects. Download the 2026 catalogue for complete data on all eleven board types.
Start the specification
We'll put samples of every board in your hands.
Sample box ships 11 board chips, a full felt swatch deck, and the 2026 catalogue. Free for registered design studios. Despatches within 2 working days.
Frequently asked
Acoustic board questions, answered.
What are acoustic boards and how do they differ from acoustic panels?
Acoustic boards are rigid or semi-rigid products manufactured from compressed materials (polyester fibre, mineral fibre, or wood wool) that maintain their structural form without a separate fabric facing. Acoustic panels typically refer to a core material wrapped in fabric or a decorative finish. U-TONE boards are manufactured from compressed recycled PET felt and are surface-machined directly to the finished profile, making them acoustic boards in the strict sense. In practice, both terms are used interchangeably in the Indian specification market.
What NRC rating do U-TONE acoustic boards achieve?
U-TONE acoustic boards achieve NRC ratings of 0.70 to 0.90 depending on the board type and thickness. NRC (Noise Reduction Coefficient) measures sound absorption on a scale of 0 to 1; a rating of 0.85 means 85 per cent of incident sound energy is absorbed. Testing is to ASTM C423. Third-party test reports are available on request.
What are U-TONE acoustic boards made from?
U-TONE boards are manufactured from recycled polyester felt produced from post-consumer PET bottles. Each square metre incorporates 88 PET bottles. The felt is dense-pressed to 180 to 200 kg/m³ and precision-machined to the finished surface profile. No adhesives, formaldehyde, or VOC-emitting binders are used.
Can acoustic boards be cut to custom sizes?
Yes. All U-TONE boards are available in standard sheet sizes (2400×1200 mm, 2400×600 mm, 1200×600 mm) and can be fabricated to project dimensions. Custom sizes, non-rectangular shapes, and CNC-cut surface patterns are available from 12 m² per pattern. Tolerances are ±1 mm on cut dimensions.
How are acoustic boards installed?
Four installation systems are available: concealed Z-clips on wall battens for a flush, removable finish; impaling clips for direct mechanical fixing; construction adhesive for permanent bonding; and a magnetic system for panels requiring regular removal access. Mounting boards with a 25 to 50 mm air gap behind the substrate improves low-frequency absorption. Installation is carried out by trained Unidus teams across 16 cities.
What is the lead time for acoustic boards?
Standard lead time is 4 to 8 weeks from approved sign-off drawings. Sample boxes despatch within 2 working days.
Are these acoustic boards fire-rated?
Yes. All U-TONE boards carry Class B1 fire rating to BS 476 Part 7, meeting the commercial interior requirements for offices, educational institutions, hospitality, and healthcare in India. ASTM E84 test reports are available for export or US green building compliance.
Are Unidus acoustic boards available for government procurement?
Yes. Unidus Acoustics is registered on the Government e-Marketplace (GeM). U-TONE boards have been installed at AIIMS, SBI, Air India, and Ashoka University. GeM product listing codes and GFR-compliant specifications are available on request from the specification desk.
Also from Unidus Acoustics
Beyond acoustic boards.
Wall · Soft tile
AcoustiSo
300 × 300 mm modular felt tiles in 18 geometric profiles. Suitable for feature walls and acoustic partitions.
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Booth · 1-person
Unipod AS1
A self-contained quick call booth. UL-certified ventilation, double-glazed glass, USB and universal socket. U-TONE felt lining inside.
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