Acoustic Features:

Distance between grooves: 29 mm

Groove width: 3 mm

Groove depth: 6 mm

Distance between holes: 32×32 mm

Hole diameter: 8 mm, 6 mm, 4 mm

Hole depth: 15 mm

Open area: 6%

Hole count per sqm: 1000

 

Acoustic Value:

NRC: 0.55 Euro Class C