Grooved Acoustic Panel Series for Walls and Ceilings
Rooms with extensive hard surfaces often suffer from long reverberation, blurred speech, and uncomfortable sound build-up. LEEYIN Grooved Acoustic Panel systems combine architectural lining and sound treatment in one modular product family. Each panel uses longitudinal face grooves and rear perforations to create a sound path into the backing layer and supporting cavity, where acoustic infill can further absorb reflected energy.
How the Grooved Acoustic Panel Construction Works
The visible grooves establish a consistent linear rhythm across walls or ceilings. Behind the face, round perforations and an acoustic backing help sound enter the panel assembly while screening the cavity from view. Backing options listed in the TDS include nonwoven fabric, fiberglass paper, and Soundtex in black or white, with typical thicknesses of 0.2–0.3 mm and weights of 50 or 80 g/m².
Six groove geometries are available: 5-3, 6-2, 13-3, 14-2, 28-4, and 60-4. Published test data reports NRC 0.85 for 6-2, NRC 0.75 for 13-3 and 14-2, and NRC 0.60 for 28-4.
These figures apply to the tested products and assemblies identified in the technical data. The selected backing, cavity, acoustic infill, substrate, and mounting method should therefore be confirmed before a project value is specified.
The absorption measurements reference GB/T 20247-2006 and ISO 354:2003.
Multiple Cores for Different Project Priorities
The series covers warm natural wood constructions as well as inorganic core options for projects with more demanding fire or emissions criteria.
Multilayer and solid wood variants provide a genuine wood-based material direction. Environmental MDF offers a stable decorative substrate, while fire-retardant MDF is listed with B1 (B-s1,d0) under GB 8624 and C-s2,d0 under EN 13501-1.
The ceramic-aluminum product family uses a glass-magnesium core. Glass-magnesium, rock-gold, and silicon-mineral variants are listed as A2-s1,d0 under the Chinese fire classification in the supplied TDS.
Fire ratings are substrate-specific and must not be applied to a different core without the corresponding test report.
The TDS identifies formaldehyde-emission options from E1 to ENF:
- Environmental MDF: E1/E0 configurations
- Fire-retardant MDF: E1
- Glass-magnesium: E1/E0/ENF configurations
- Rock-gold core: ENF
- Silicon-mineral core: ENF
These grades reference GB/T 39600-2021. Exact compliance must be matched to the ordered substrate and current test report.
Series Variant Matrix
| Variant |
Core / Construction |
Performance Positioning |
Recommended Use |
| Multilayer Grooved Acoustic Panel |
Layered wood construction shown in the supplied product images |
Natural layered edge appearance; final layer build-up and classifications should be confirmed using the approved sample and reports |
Decorative walls and ceilings where layered wood construction is preferred |
| Solid Wood Grooved Acoustic Panel |
Solid wood core |
Natural wood material direction; finish, moisture conditioning, and project fire documentation should be confirmed before specification |
Premium auditoriums, meeting rooms, theatres, and hospitality interiors |
| Environmental MDF Grooved Acoustic Panel |
Environmental MDF; TDS density 750 kg/m³ |
E1/E0 configurations listed in the TDS |
General interior acoustic walls and ceilings |
| Fire-Retardant MDF Grooved Acoustic Panel |
Fire-retardant MDF; TDS density 680 kg/m³ |
E1; B1 (B-s1,d0) under GB classification and C-s2,d0 under EN classification |
Public interiors requiring a fire-retardant wood-based core |
| Ceramic-Aluminum Grooved Acoustic Panel |
Glass-magnesium inorganic core |
Ceramic-aluminum series name with glass-magnesium core; E1/E0/ENF options and A2-s1,d0 listed in the TDS |
Corridors, halls, cinemas, and large public interiors prioritizing an inorganic core |
| Rock-Gold Grooved Acoustic Panel |
Rock-gold inorganic core; TDS density 1140 kg/m³ |
ENF and A2-s1,d0 listed in the TDS; separate mechanical-property results are available |
High-traffic interiors with demanding fire, emissions, and mechanical requirements |
| Silicon-Mineral Grooved Acoustic Panel |
Silicon-mineral inorganic core; TDS density 1080 kg/m³ |
ENF and A2-s1,d0 listed in the TDS |
Public interiors requiring an inorganic, low-emission core |
Groove Geometry
| Groove Model |
Groove Width |
Groove Pitch |
Maximum Opening Ratio |
| 5-3 |
3 mm |
5 mm |
18% |
| 6-2 |
2 mm |
6 mm |
12% |
| 13-3 |
3 mm |
13 mm |
11% |
| 14-2 |
2 mm |
14 mm |
6% |
| 28-4 |
4 mm |
28 mm |
4% |
| 60-4 |
4 mm |
60 mm |
3% |
Published NRC Results
| Tested Groove Model |
NRC |
| 6-2 |
0.85 |
| 13-3 |
0.75 |
| 14-2 |
0.75 |
| 28-4 |
0.60 |
Product Attributes
| Attribute |
Specification |
| Product Name |
LEEYIN Grooved Acoustic Panel Series |
| Product Type |
Grooved and rear-perforated decorative acoustic wall and ceiling panel |
| Core Options |
Multilayer wood; solid wood; environmental MDF; fire-retardant MDF; glass-magnesium; rock-gold; silicon-mineral |
| Standard Dimensions |
2440 × 132 × 12/15/18 mm |
| Groove Models |
5-3; 6-2; 13-3; 14-2; 28-4; 60-4; custom |
| Surface Materials |
Engineered veneer; natural veneer; fire-resistant laminate; melamine paper |
| Surface Thickness |
0.25–0.45 mm, depending on facing |
| Decorative Effects |
Wood grain; metal; stone; fabric |
| Acoustic Backing |
Nonwoven fabric; fiberglass paper; Soundtex; black or white |
| Backing Thickness |
0.2–0.3 mm |
| Backing Weight |
50 or 80 g/m² |
| Published NRC |
0.60–0.85 for the tested groove models and assemblies |
| Acoustic Test References |
GB/T 20247-2006; ISO 354:2003 |
| Fire Classification Options |
Fire-retardant MDF: B1 (B-s1,d0)/C-s2,d0; glass-magnesium, rock-gold, and silicon-mineral: A2-s1,d0, as listed in the TDS |
| Fire Test References |
GB 8624-2012; EN 13501-1:2018 |
| Formaldehyde-Emission Options |
E1 ≤ 0.124 mg/m³; E0 ≤ 0.050 mg/m³; ENF ≤ 0.025 mg/m³, depending on core |
| Emission Test References |
GB/T 39600-2021; GB/T 17657-2022 |
| Installation |
Timber-batten, light-steel-frame, clip-fixed, nail-fixed, wall, and suspended-ceiling assemblies subject to project design |
| Applications |
Auditoriums, lecture halls, cinemas, theatres, meeting rooms, sports halls, corridors, hotels, schools, offices, home theatres, and public interiors |
| Brand |
LEEYIN |
Rock-Gold Core Physical Properties
These results apply specifically to the rock-gold core identified in the supplied TDS and must not be generalized to other substrates.
| Property |
TDS Result |
| Thickness swelling after water absorption |
0.1% |
| 24-hour water absorption |
0.21% |
| Internal bond strength |
3.26 MPa |
| Immersion peel performance |
Class III |
| Screw-holding force |
1585 N |
| Surface cracking resistance |
Grade 5 |
| Cigarette-burn resistance |
Grade 5 |
| Test reference |
GB/T 17657-2022 |
For wall installation, the technical drawings show panels fixed to timber battens or light-steel framing with an acoustic cavity and optional glass-wool or acoustic-wool infill.
The supplied nail-fixed diagram shows:
- 12 mm timber battens
- Gun-nail fixing
- 50 mm acoustic-wool layer
- C75 light-steel framing
- 300–600 mm vertical spacing
- 600/800 mm horizontal setting-out
The TDS also illustrates proprietary clip installation and a suspended-ceiling build-up. Final fasteners, batten spacing, cavity depth, edge details, and infill density must follow the substrate condition, engineering requirements, fire strategy, and approved project drawings.
See LEEYIN’s design and installation support for project coordination.
This Grooved Acoustic Panel series is suited to auditoriums, lecture halls, theatres, cinemas, meeting rooms, sports halls, corridors, hotels, schools, offices, and home theatres.
Browse the complete LEEYIN acoustic product range, review available test reports, or request a product sample to approve the core, groove, and finish.
