Not all acoustic slat wall panels are made to the same standard. Two spec details make the biggest difference between a panel that looks amazing for years and one that disappoints once it's on the wall: how many sides are finished with real veneer, and how thick the panel is. Here's what to look for.
Refers to how many surfaces of each slat are covered with real wood veneer.
The front face of each slat has real wood veneer; the two long sides are finished in black.
The black edges recede into the shadow between slats, letting the wood faces stand out. A bold, contemporary contrast that works beautifully in modern and industrial interiors.
The front face and both long sides of each slat are covered in real wood veneer.
Real wood on every visible surface — including inside the shadow gaps. Reads as warm, all-natural and organic. Suits Scandi, classic and biophilic interiors.
| Feature | 1-Sided | 3-Sided |
|---|---|---|
| Slat front face | Real wood veneer | Real wood veneer |
| Slat side edges | Black finish | Real wood veneer |
| Look from an angle | Wood faces pop against black shadow gaps — contemporary contrast | Continuous wood on every visible surface — natural, seamless |
| Best for | Modern, industrial, minimalist, darker interiors | Scandi, classic, biophilic, all-wood aesthetic |
| Cost | Lower | 10–20% higher |
The total depth of the panel — slat thickness plus the acoustic felt backing.
Thinner slats (typically 12mm slat + 4mm felt backing). Flatter profile, subtler shadow lines.
Lower cost but less depth on the wall — in strong light the flatter profile can look printed or two-dimensional rather than sculptural.
Thicker slats (typically 17mm slat + 4mm felt). Deeper profile, pronounced shadow lines, real three-dimensional texture on the wall.
Standard for premium UK acoustic panels. The deep shadow gaps create a genuinely sculptural surface — what most buyers imagine when they picture a slat wall.
| Feature | 16mm | 21mm |
|---|---|---|
| Total depth | 16mm | 21mm |
| Shadow / 3D effect | Flatter — can look printed | Deep, sculptural, genuinely 3D |
| Weight | Lighter (~7kg per panel) | Heavier (~10kg per panel) |
| Acoustic absorption | Good — NRC 0.65–0.80 | Excellent — NRC 0.75–0.90 |
| Feel / durability | Fine for light-use rooms | Solid, long-lasting |
| Best for | Budget projects, half-height wainscot | Feature walls, home cinema, studios, hospitality |
Both look brilliant — pick by the mood you want:
This one's not a preference — it's a quality call. 21mm panels give real 3D depth: deeper slats cast proper shadow lines and the wall reads as genuinely sculptural. 16mm panels look flatter and, in strong light, can look printed or fake. If the wall's on show, always choose 21mm.
