Topakustik Classic 28/4 M or T
Centre-to-centre distance = 21.3 or 32 mm
These grooves are the ideal solution for standard absorption requirements. As with all centre-to-centre distances, the wide grooving also comes with 2 mm, 3 mm and 4 mm grooves.
The advantages of this type:
- very good sound absorption
- wide frequency range
- good for ceiling assembly
- subtle groove of 3 mm
