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Grooved acoustic panel is a common acoustic and decorative material in interior architecture. Its slotted-front, perforated-back structure is scientifically calculated on acoustic principles and delivers excellent mid- and high-frequency absorption. Model 28/4 (28 mm slot pitch, 4 mm slot, 8.5% perforation rate) is the all-round workhorse of the range.
| Property | Value |
|---|---|
| Model | 28-4 (perforation rate 8.5%) |
| Structure | Substrate + finish + acoustic backing |
| Width | 133 / 197 mm |
| Length | 2440 mm |
| Thickness | 12 / 15 / 18 mm |
| Substrate | Standard / eco / flame-retardant / moisture-proof / MgO / ceramic-aluminium board |
| Finish | Melamine / wood veneer / fireproof veneer / paint |
| Back | Non-woven fabric / acoustic felt |
| Installation | Wall keel + special clips, or battens with acoustic cotton infill |
Model 28-4, laboratory reverberation-room data as published in the MST product catalogue.
| Frequency (Hz) | αs |
|---|---|
| 100 | 0.21 |
| 125 | 0.31 |
| 160 | 0.31 |
| 200 | 0.53 |
| 250 | 0.59 |
| 315 | 0.63 |
| 400 | 0.75 |
| 500 | 0.85 |
| 630 | 0.89 |
| 800 | 0.79 |
| 1000 | 0.76 |
| 1250 | 0.61 |
| 1600 | 0.63 |
| 2000 | 0.62 |
| 2500 | 0.61 |
| 3150 | 0.59 |
| 4000 | 0.65 |
| 5000 | 0.59 |
Octave-band average of the 250–2000 Hz bands (NRC) ≈ 0.70. Coefficients are quoted for the mounting described above; a different cavity depth or backing moves the curve, so confirm the build-up with us before fixing the specification.
Stadiums, theatres, concert halls, lecture halls, multi-purpose halls, home cinemas, conference rooms, hotels.
| Item | Detail |
|---|---|
| Minimum order quantity | 300 m² |
| Production lead time | 15–25 working days from order confirmation |
| Packaging | 6 panels per carton, edge-protected |
| Container loading | 20′ GP ≈ 1,100 m² · 40′ HQ ≈ 2,600 m² |
| Terms | EXW Shanghai · FOB Shanghai · CIF on request |
| Payment | 30% deposit with order, balance against B/L copy by T/T; L/C at sight on request |
Component test reports are issued to our manufacturing partners rather than to MST. Authorised copies, including laboratory and certificate numbers, are released with every quotation.
A4 groove samples of the 28-4, 59-5, 40-3 and 14-2 patterns are despatched free of charge within 7 working days.
Email your drawing, panel schedule or a square-metre count to sales@mstacoustics.com, or send the enquiry form on this page. We reply within one working day with pricing, lead time and freight options. Datasheets, colour charts and installation guides are collected in our technical resources library.
Can you match an existing timber finish?
Yes — send a sample or a RAL / NCS reference and we issue a control sample for approval before production.
Which groove model should I choose?
28-4 is the balanced all-rounder; 59-5 reads as wide board, 13-3 / 14-2 read as fine linear grain. We advise based on your room and RT60 target.
Do you supply the keel and clip system?
Yes — the matching main-keel, clip and batten set is supplied with every order.
Clear sound, clear mind.
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