Advanced Acoustics 3" Acousti-Slab Acoustic Foam Treatment Panel
The Advanced Acoustics Acousti-Slab 3" is a 75mm open-cell polyurethane acoustic foam panel, measuring 2ft × 4ft (610mm × 1220mm). The panel achieves NRC 1.00 (Sound Absorption Class A) — the highest rating in the Acousti-Slab range — providing comprehensive broadband absorption across the full mid and high frequency range with strong low-frequency performance. Each panel covers 0.74m² (8sqft). Available unmounted or mounted to a 6mm MDF substrate.
The unmounted panel can be fixed directly to the wall surface using contact adhesive, trimmed to size, or wrapped in open-weave fabric. The mounted panel is pre-fixed to 6mm MDF for wall hanging using mirror plates. Absorption is consistent and high across all measured frequencies: 0.83 at 250Hz, 1.09 at 500Hz, 1.07 at 1kHz, 1.08 at 2kHz, and 1.09 at 4kHz. Available in Mid Grey and Dark Grey. Manufactured in the UK.
Applications
Professional recording studios and control rooms — Class A broadband treatment.
The 3" Acousti-Slab at NRC 1.00 provides comprehensive absorption across the full mid and high frequency range, making it the appropriate specification for professional recording studios and control rooms where thorough broadband treatment is required. The 0.83 at 250Hz delivers strong low-frequency absorption that is largely absent from thinner profiles — the 2" panel achieves 0.45 at 250Hz, the 1" panel 0.20 — addressing the low-frequency reverberation and room modes that remain partially untreated with shallower foam depths. Install on the primary reflection points and extend coverage as required for the acoustic target. Use the Coverage Calculator to determine the number of panels required.
Voice-over studios and broadcast environments — maximum absorption.
Voice-over studios and broadcast environments benefit from thorough absorption across the vocal frequency range to produce clean, dry recordings with minimal room character. The 3" Acousti-Slab provides essentially complete absorption from 500Hz upward — 1.07 to 1.09 across 500Hz, 1kHz, 2kHz, and 4kHz — alongside strong 250Hz absorption that controls the low-frequency warmth and muddiness that thinner panels leave uncorrected. The Class A rating makes this the highest-performing single panel in the Acousti-Slab range for environments where the driest possible acoustic result is required.
Custom acoustic installations — Class A fabric-wrapped panels.
The unmounted 3" Acousti-Slab is the appropriate base material for custom fabric-wrapped acoustic panels where Class A performance is required. The 75mm foam depth delivers NRC 1.00 behind any acoustically transparent open-weave fabric, making it the preferred specification for high-performance fabric panel installations in professional studios, post-production facilities, and commercial spaces. Custom sizes are available on request.
Product Benefits
NRC 1.00 / Sound Absorption Class A — comprehensive broadband absorption.
The 75mm foam core achieves NRC 1.00 (Class A), with consistently high absorption across all measured frequencies: 0.83 at 250Hz, 1.09 at 500Hz, 1.07 at 1000Hz, 1.08 at 2000Hz, and 1.09 at 4000Hz. The 0.83 at 250Hz represents the strongest low-frequency performance in the Acousti-Slab range — significantly above the 2" panel (0.45) and the 1" panel (0.20) — making the 3" the appropriate specification where low-frequency reverberation alongside mid and high frequency control is the requirement. The flat, consistent absorption from 500Hz to 4kHz delivers essentially complete treatment across the primary recording and listening frequency range.
Unmounted and mounted-to-MDF formats.
The unmounted panel is bare foam suitable for direct adhesive fixing, trimming, or fabric wrapping. The mounted panel is pre-fixed to a 6mm MDF substrate for wall hanging using mirror plates. The mounted format provides a rigid, repositionable panel without the use of contact adhesive. Both formats are available in Mid Grey and Dark Grey.
Specification and compliance.
30kg/m³ foam density. Crib 5 and Schedule 1, Part 1 of the Furnishings and Furniture (Fire)(Safety) Regulations 1988 (amended 1989). Panel size 610mm × 1220mm × 75mm (2ft × 4ft × 3"). 0.74m² (8sqft) coverage per panel. 2.7kg unmounted, 6.3kg mounted. Mid Grey and Dark Grey. Custom sizes available on request. Manufactured in the UK and shipped uncompressed from stock.
Installation
Unmounted panels — adhesive fixing.
Apply Advanced Acoustics High Strength Contact Adhesive to both the back of the panel and the wall surface. Apply a band of adhesive around the perimeter and 50–75% coverage of the remaining surface area; repeat on the wall. Allow to become touch-dry before bringing surfaces together — contact adhesive bonds on contact, so position the panel carefully before pressing it to the wall. The adhesive is solvent-based; ensure adequate ventilation throughout installation.
Unmounted panels — demountable installation.
For a temporary or demountable installation, mount the panel onto 6mm MDF or plywood sheet and hang using D-rings and picture hooks. For ceiling-mounted panels, use four mirror plates per panel. This allows panels to be removed and repositioned without damage to the wall surface.
Mounted-to-MDF panels.
Fix mirror plates to the wall at the appropriate centres using suitable fixings for the wall substrate. Hang the panel on the mirror plates. The mounted panel can be removed and rehung without tools.
The Technical Details
| Product Name | Acousti-Slab Panel 3" |
| Product Size | 24" x 48" x 3" (610mm x 1220mm x 75mm) |
| Area Covered Per Panel | 8sqft (0.74sqm) |
| Sound Absorption Class | A |
| Noise Reduction Coefficient |
1.00 |
| Absorption at 250Hz | 0.83 |
| Absorption at 500Hz | 1.09 |
| Absorption at 1000Hz | 1.07 |
| Absorption at 2000Hz | 1.08 |
| Absorption at 4000Hz | 1.09 |
| Product Colour | Mid Grey or Dark Grey |
| Product Weight | 2.7kg without mounting, 6.3kg with mounting |
| Fire Classification | Crib 5 and Schedule 1, Part 1 of the Furnishings and Furniture (fire)(safety) Regulations 1988 (amended 1989) |
| Acoustic Foam Density | 30kg/m3 |
Performance Data
