About Rockfon Blanka dB 41
A 35mm Blanka tile with a dense membrane on the back to cut sound passing over partitions through the ceiling void. It suits cellular offices and consulting rooms where partitions stop at ceiling height but privacy between rooms still matters.
Key performance
| Sound absorption | αw: 0.90 (Class A) |
|---|---|
| Room to room sound insulation | Dn,f,w = 41 dB |
| Dn,f,w with Rockfon Acoustimass | 52* dB (*theoretical analysis) |
| Direct sound insulation | Rw = 21 dB |
| Reaction to fire | A2-s1,d0 |
| Light reflection | 87% light reflection, >99% light diffusion |
| Weight (kg/m2) | 5.6 |
| Cleaning | Vacuum; Damp cloth |
Source: Rockfon Blanka dB 41 datasheet, 04.2026. Figures quoted exactly from the manufacturer's datasheet; confirm with Rockfon before specifying.
Acoustic performance
| Edge / Thickness (mm) / Suspension (incl. tile - mm) | αw | Absorption class | NRC |
|---|---|---|---|
| 35 / 200 | 0.90 | A | 0.90 |
Selected rows; full table in the technical datasheet.