Wall & Ceiling · Full range
Acoustic Panels
The complete U-TONE wall and ceiling panel range: all eleven profiles, NRC data, colour catalogue, and specification guide on one page.
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Recycled Content · U-TONE Range
PET Acoustic
Panels
Eighty-eight recycled plastic bottles per square metre. Zero chemical binders.
88
PET bottles per m²
0.90
Max NRC
B1
Fire Class
100%
PET recyclable
From waste to specification
Post-consumer plastic bottles, compressed into an architectural acoustic substrate.
PET acoustic panels convert post-consumer polyethylene terephthalate (the polymer in beverage bottles) into a dense, rigid acoustic board through a mechanical recycling and thermal pressing process. No chemical adhesives or binders are added at any stage. The result is a panel that absorbs sound at NRC 0.70 to 0.90, achieves Class B1 fire rating, and carries a fully documented and auditable recycled content of 88 post-consumer bottles per square metre.
The material advantage of PET felt over other acoustic substrates is circular: the panels are manufactured from waste, perform at specification grade during their useful life, and return to the PET recycling stream at the end of it. Because no laminate facing is applied (the colour and surface profile are integral to the felt substrate), the entire panel disassembles as a single material. There are no adhesive layers or woven facings to separate before recycling.
88 PET bottles
Recycled per m² of panel, post-consumer
100% recyclable
Single-material PET. No separation required
Zero VOC
No adhesives, no binders, no off-gassing
GRIHA + LEED
Recycled content credit eligible
Green building
Documentation ready for GRIHA, LEED, and GeM.
The primary reason to specify PET acoustic panels on a rated project. The specification desk prepares a complete documentation pack for GRIHA assessors and LEED submitters within 48 hours of request: recycled content letter, test certificates, and credit calculation sheet.
GRIHA
Materials credit · Recycled content documentation prepared on request
LEED
MR Credit 4 · Post-consumer recycled content by mass
GeM
Government e-Marketplace · Government and PSU projects
ASTM E84
Surface burning test · Export and US green building compliance
Eleven panels
Every panel on the same recycled PET felt substrate.
Seven wall panels and four ceiling panels, all manufactured from post-consumer PET felt. One recycled content declaration covers the entire project, regardless of how many surface profiles are specified.
-
Wall · Perforated
Cut Work
UTC-CW
Geometric perforations in 40+ patterns on a recycled PET felt substrate. Each square metre incorporates 88 post-consumer plastic bottles. The most widely specified U-TONE wall panel.
- NRC
- 0.70–0.90
- Thickness
- 9 / 12 / 18 / 24 mm
-
Wall · Fluted
Fluted
UTC-FL
Vertical linear channels on recycled PET felt. Same recycled content, same colour palette, same NRC as the full U-TONE range, the specifier default for open-plan offices.
- NRC
- 0.75
- Thickness
- 9 / 12 / 18 / 24 mm
-
Wall · Grooved
Grooved
UTC-GR
Horizontal grooves machined into recycled PET felt. Full GRIHA and LEED recycled content documentation available. Preferred for boardrooms and executive suites.
- NRC
- 0.78
- Thickness
- 9 / 12 / 18 mm
-
Wall · Custom print
Printed
UTC-PR
Full-surface digital print on a recycled PET substrate. Branding, murals, or artwork on a material with a documented recycled content of 88 bottles per m².
- NRC
- 0.72
- Thickness
- 12 / 18 mm
-
Wall · Inlay
Inlay
UTC-IN
Two-colour inlay from the same recycled PET felt substrate. No additional materials, no adhesive film. The entire panel assembly is 100% recyclable PET.
- NRC
- 0.74
- Thickness
- 12 / 18 mm
-
Wall · Three-dimensional
3D Wall
UTC-3D
Deep relief geometry on recycled PET felt: pyramid, wave, or faceted profiles. NRC 0.82 with the highest visual presence in the wall range.
- NRC
- 0.82
- Thickness
- 36 mm
-
Wall · Modular
Jigsaw
UTC-JG
Interlocking modular PET felt panels that can be replaced individually at end of product life. The entire module is recyclable as PET without separation of materials.
- NRC
- 0.76
- Thickness
- 12 / 18 mm
-
Ceiling · Suspended
Baffle
UTC-BF
Vertically suspended recycled PET felt baffles on stainless steel cables. Recycled content data and GRIHA documentation available for submission on IGBC-registered projects.
- NRC
- 0.85
- Thickness
- 24 mm
-
Ceiling · Horizontal
Cloud
UTC-CL
Horizontal floating PET felt panels for targeted absorption over workstations. Available in rectangular and project-specific shapes; recycled content documented per panel.
- NRC
- 0.85
- Thickness
- 24 mm
-
Ceiling · Open cell
Open Cell
UTC-OC
Grid-format open cell PET felt ceiling that integrates with standard 600 × 600 mm systems. NRC 0.80 while keeping services accessible. Full recycled content documentation available.
- NRC
- 0.80
- Thickness
- 24 mm
-
Ceiling · Curved
Petal
UTC-PT
Curved petal-form ceiling panels in clusters or linear runs. The PET felt substrate holds compound curves without adhesive bonding or added reinforcement.
- NRC
- 0.85
- Thickness
- 24 mm
Environmental credentials
PET panels against other acoustic materials.
When a project requires documented environmental credentials for GRIHA, LEED, or IGBC submission, the choice of acoustic material affects credit calculations. This comparison covers the metrics that matter.
| Metric | U-TONE PET Panels Recycled PET felt | Mineral wool Rockwool / Glasswool | Foam boards PU / Melamine |
|---|---|---|---|
| Post-consumer recycled content | 88 post-consumer PET bottles per m², verifiable and auditable | Partial recycled glass content in some products; typically 20–30% by mass | Generally virgin polymer; no significant recycled content |
| End-of-life recyclability | 100% recyclable as PET. No material separation required | Recyclable in select variants; fabric facings must be separated first | Not recyclable in mainstream streams |
| VOC off-gassing | Zero: no adhesive or chemical binder at any stage | Formaldehyde-based binders in some products; off-gassing on install | Present in many PU variants; lower in melamine foam |
| GRIHA credit eligibility | Eligible: materials credit for recycled content. Documentation prepared on request | Partial eligibility depending on recycled glass content percentage | Not eligible for recycled content credits |
| LEED MR-4 eligibility | Eligible: post-consumer recycled content by mass for MR Credit 4 | Partial: pre-consumer glass content may qualify in some products | Not eligible |
| Regional manufacture | Manufactured in India. Qualifies for regional materials credits | Often imported; regional credits may not apply | Varies by supplier |
Specification
Material, performance, and recycled content data.
Reference data for Cut Work (UTC-CW). NRC varies by surface profile and thickness. Recycled content is consistent across all eleven panel types.
| Substrate material | Recycled PET (polyethylene terephthalate) felt |
|---|---|
| Recycled content | 88 post-consumer PET bottles per m² (by mass, auditable) |
| Density | 180–200 kg/m³ |
| Binders / adhesives | None: thermally bonded PET fibres only |
| VOC emissions | Zero |
| Sheet dimensions | 2400 × 1200 mm · 2400 × 600 mm · 1200 × 600 mm |
| NRC range | 0.70–0.90 (varies by profile and thickness; tested to ASTM C423) |
| Fire rating | Class B1 to BS 476 Part 7 |
| Disinfectability | Fog · spray · wipe |
| End-of-life | 100% PET recyclable. No material separation required |
| MOQ | 12 m² per pattern and colour |
| Lead time | 4–8 weeks from approved sign-off |
Recycled content declaration letter, ASTM C423 acoustic test report, and BS 476 fire certificate available on request. ASTM E84 available for LEED or US project submissions. GRIHA credit calculation sheet prepared on request. Download the 2026 catalogue.
52 colours
The full palette in recycled PET felt.
52 colours developed with Colour Hive for corporate, hospitality, and institutional interiors, all in the same recycled PET substrate. Fire rating, NRC, and recycled content are identical across the palette. Custom dyeing 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
Installation
No major civil intervention.
Four fixing systems are available: concealed Z-clips on wall battens for a flush, removable finish; impaling clips for faster fixing on large unbroken elevations; acoustic-grade construction adhesive for permanent bonding on flat substrates; and a magnetic system where panels require regular removal access. A 25 to 50 mm air gap behind the PET felt substrate improves low-frequency absorption, important for projects where the recycled content credentials need to match high acoustic performance.
Unidus teams install PET acoustic panels across 16 cities in India. Manufacturing, logistics, and installation are managed in-house. Single point of accountability from production to site handover.
In situ
PET acoustic panels across India.
Corporate campuses, educational institutions, government buildings, and hospitality venues. Unidus manufactures, ships, and installs in-house across 16 cities.
Specified for
Specified by
What architects and sustainability leads say.
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.
We had three vendors on the shortlist for a green-rated campus project. Unidus won partly on cost, but mainly because their PET felt panels came with a complete recycled content declaration ready for the LEED submission package.
We specified PET acoustic panels for a hospitality project seeking IGBC certification. Unidus provided a completed credit calculation sheet for the GRIHA assessor. That level of documentation support is not common in the Indian acoustic market.
Start the specification
We'll put recycled PET samples in your hands.
Sample box ships 11 panel chips, one per surface profile, all on the same recycled PET substrate, plus a 52-colour felt swatch deck and the 2026 catalogue. Free for registered design studios. Despatches within 2 working days.
Frequently asked
PET acoustic panel questions, answered.
What are PET acoustic panels?
PET acoustic panels are sound-absorbing panels manufactured from polyethylene terephthalate (PET) felt, the same polymer used in beverage bottles and food-grade packaging. Post-consumer PET bottles are mechanically recycled into fine polyester fibres, which are then thermally compressed into dense acoustic boards without chemical adhesives or binders. U-TONE PET acoustic panels achieve NRC 0.70 to 0.90 across eleven surface profiles and are available in 52 curated colours. The entire panel (substrate, colour dye, and machined surface profile) is a single PET material with no laminate layers, making it 100 per cent recyclable at end of life.
How are PET acoustic panels manufactured from plastic bottles?
Post-consumer PET bottles are collected, sorted by colour, and mechanically shredded into flake. The flake is melted and extruded through fine spinnerets into continuous polyester fibres. The fibres are cut to staple length, cross-lapped into a thick batt, and needle-punched to interlock the fibre matrix. The batt is then thermally pressed at 180 to 200 kg/m³ until the PET fibres fuse at contact points. No adhesive or binder is needed because PET fibres self-bond under heat. The pressed sheet is cooled, cut to size, and CNC-machined to the selected surface profile. Each square metre of finished panel incorporates 88 post-consumer PET bottles.
Do PET acoustic panels qualify for GRIHA or LEED credits?
Yes. U-TONE PET panels are eligible to contribute to recycled content credits under both GRIHA (Green Rating for Integrated Habitat Assessment) and LEED. Under LEED v4, they contribute to Material and Resources Credit MR-4 (Building Product Disclosure and Optimization: Recycled Content) based on their post-consumer recycled content by mass. Under GRIHA, they are eligible for the materials and resources criterion covering recycled material use. Unidus provides a recycled content declaration letter and material data sheet for submission on IGBC- or USGBC-registered projects. ASTM E84 test reports are available for US green building submissions.
What NRC rating do PET acoustic panels achieve?
U-TONE PET acoustic panels achieve NRC ratings of 0.70 to 0.90 depending on the surface profile and thickness. The recycled PET felt substrate performs acoustically through porous absorption: sound energy is converted to heat by friction as pressure waves move through the dense fibre matrix. NRC is tested to ASTM C423. Thicker panels (24 mm and above) and panels installed with a 25 to 50 mm air gap behind the substrate achieve the upper end of the range. Third-party test reports are available on request.
Are PET acoustic panels safe for indoor use, with no VOC off-gassing?
Yes. Because PET felt is thermally bonded without chemical adhesives or binders, there is no VOC off-gassing during or after installation. The surface is not friable and does not shed fibres in normal use. U-TONE panels have been specified for healthcare facilities including AIIMS, where indoor air quality standards are among the most stringent in the Indian specification market. The panels can be disinfected by fog, spray, or wipe compatible with standard infection control protocols.
Are PET acoustic panels recyclable at end of life?
Yes. Because the entire U-TONE panel assembly (substrate, colour dye, and machined profile) is a single PET polymer with no adhesive core or fabric facing, panels can be returned to the PET recycling stream at end of life. This is a material advantage over fabric-wrapped acoustic panels or mineral wool boards, which require manual separation of facing materials before recycling. Unidus can advise on end-of-life collection for large project demounts on request.
How do I specify PET acoustic panels for a green building project?
Request the Unidus specification pack from the specification desk (specify@unidusindia.com). The pack includes: recycled content declaration letter (percentage by mass, post-consumer vs pre-consumer breakdown), ASTM C423 acoustic test certificate, BS 476 Part 7 fire certificate, material data sheet, and ASTM E84 surface burning test report for LEED submissions. On GRIHA projects, Unidus can provide a completed GRIHA material credit calculation sheet on request.
What is the minimum order quantity for PET acoustic panels?
Minimum order quantity is 12 m² per surface pattern and colour combination. Standard sheet sizes are 2400 × 1200 mm, 2400 × 600 mm, and 1200 × 600 mm; all are available in custom fabricated dimensions within the 4 to 8 week standard lead time. Sample boxes ship within 2 working days and contain chips of all eleven panel profiles plus a full 52-colour felt swatch deck.
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