Echsorbix® ColourMute Solid
PET Acoustic Panels
Professional-grade PET felt acoustic panels for reverberation control, NRC tested to ASTM C423. Made from 100% PET polyester fibre at the MMTPL Palwal plant for offices, institutions, hospitality, healthcare and auditoriums.


The problem it solves
What Echsorbix® fixes for you
Echo in hard rooms
Glass, concrete and tile bounce sound around. Echsorbix® absorbs those reflections and brings reverberation down.
Voices that blur in meeting rooms
Speech becomes clear in boardrooms, video calls and discussions.
Noisy open offices and cafeterias
Cuts the build-up of chatter across workstations, collaboration zones and dining areas.
Classrooms and lecture halls
Students hear the teacher clearly without raised voices.
Loud restaurants and banquets
Guests can talk at the table without shouting.
Busy hospital waiting areas
Calmer OPD zones, corridors and counselling rooms.
Choose a thickness
NRC by thickness
| Thickness | NRC |
|---|---|
| 9 mm | 0.30 |
| 12 mm | 0.40 |
| 18 mm | 0.50 |
| 24 mm | 0.60 |
| 9 mm over 20 mm BassBloc® | 0.90 |
NRC tested to ASTM C423 and ISO 354. Density grades: EchoCore 15 (1500 GSM), EchoPro 18 (1800 GSM), EchoMax 22 (2200 GSM). Areal weight range 1200 to 3600 GSM.
Specifications
Technical data
| Material | 100% PET polyester fibre, non-woven |
| Manufacturer | MMTPL, Palwal plant, Haryana, India |
| Standard thickness | 9, 12, 18, 24 mm (±5%) |
| Custom thickness | 4 mm to 24 mm |
| Standard panel size | 1220 x 2440 mm (4 x 8 ft, ±5%) |
| Maximum panel size | 2440 x 4270 mm (8 x 14 ft) |
| Areal weight | 1200 to 3600 GSM |
| Density grades | EchoCore 15 (1500 GSM), EchoPro 18 (1800 GSM), EchoMax 22 (2200 GSM) |
| NRC | 0.30 (9 mm), 0.40 (12 mm), 0.50 (18 mm), 0.60 (24 mm), 0.90 (9 mm over 20 mm BassBloc®) |
| Acoustic test standards | ASTM C423, ISO 354 |
| Fire rating | Class A and Class B (ASTM E84) |
| Flame spread index | 0 |
| Smoke developed index | S1 |
| Water sorption | ASTM C1104-2019 |
| Colourfastness | ISO 105-B02, grade 6 to 7 |
| Indoor air quality | VOC ≤ 0.5 mg/m³, UL GREENGUARD certified |
| Recycled content | Minimum 60%, 100% recyclable |
| Colours | 40+ standard; custom development available |
| Wall installation | SR Adhesive, double-sided tape or nails |
| Ceiling installation | Suspended systems and hooks |
| Lead time | 3 to 7 days |
| Warranty | 5 year colour fastness |
| Country of origin | India |
Applications
Where Echsorbix® goes
Offices and co-working
Offices and co-working
Workstations, meeting rooms, boardrooms, collaboration zones.
Education
Education
Classrooms, libraries, lecture halls, auditoriums.
Hospitality
Hospitality
Hotels, restaurants, cafes, banquet halls, event spaces.
Also used in
- HealthcareOPD zones, waiting areas, corridors, counselling rooms.
- Public and culturalMuseums, galleries, experience centres, reception lobbies.
- Design-led interiorsFeature walls, ceilings, partitions, acoustic art.
- Cinemas and multiplexesWall panelling in screen rooms.
- Recording studiosWall and ceiling absorption.
- Retail and showroomsFeature walls that absorb noise.
Soundproofing: the fix for every sound problem
3-layer soundproofing
- 1
Layer 1: SoundBlanket® MLV
The dense barrier that isolates sound and stops it passing through walls, ceilings and floors.
- 2
Layer 2: BassBloc®
High-density sound absorber over the MLV that controls low-frequency noise.
- 3
Layer 3: Echsorbix®, SoundaXe® or WDWL®This product
The final acoustic finish: Echsorbix® PET felt, SoundaXe® wooden acoustics or WDWL® wood wool panels.
Layer 2 can also be covered with gypsum or cement board before adding the final acoustic layer.
Different thickness in each layer will give different STC and NRC levels.

In projects
Specified across India
Cinépolis, Mumbai
Cinema interiors
WeWork India
Co-working offices
AWFIS
Co-working offices
Schools
Classroom acoustics
Custom and OEM
CNC cut, printed, custom colours
CNC cutting, printing and custom colour are available. Custom thicknesses from 4 mm to 24 mm, custom colour development for large projects, and specification and BOQ support within 48 hours.
FAQs