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Class M1
Rockfon Blanka® dB 41
35mm-thick dual-function ceiling tiles with 41dB room-to-room sound insulation and Class A sound absorption – with smooth, ultra-white (87% LRV), matte, anti-static coating.
- Superb acoustics
- Inspiring design
- End-to-end support
Overview
Class A stone wool acoustic absorption paired with sound insulation support – delivered in Rockfon Blanka’s signature coating. Versatile, bright, inspiring.
Experience the difference of Rockfon Blanka® dB 41
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Dual control.
Along with stone wool's Class A acoustic absorption, achieve up to 41dB Dn,f,w room-to-room sound insulation – ideal for support in combatting noise transmission between adjacent rooms in open layouts.
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Visibly brighter.
With an L-value of 94.5, the ultra-white coating reflects 87% of light and diffuses over 99%, creating noticeably brighter spaces with flawless visual consistency.
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Near-seamless matte.
A low gloss level of just 0.8 GU gives Rockfon Blanka its signature matte surface – uniform and glare-free, even under critical side lighting conditions.
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A lasting clean look.
Its anti-static, cleanable coating resists dust and everyday wear and tear, keeping the finish bright and low-maintenance with a maximised service life.
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Find your level.
For stricter needs, explore the rest of the Rockfon Blanka dB range for up to 46dB Dn,f,w room-to-room sound insulation – or 55dB in combination with Rockfon® Acoustimass.
Case studies with Rockfon Blanka® dB 41
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Discover more case studies
Browse projects from around the world with optimised acoustic design featuring Rockfon solutions.
Didsbury High School, Manchester, United Kingdom
Pozzoni Architecture, 2025
Edges and sizes
Click the icons to view more details.
A24 edge - Visible grid
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| Dimensions | Recommended Grid | |
|---|---|---|
| 600x600x35 | ||
| 1200x600x35 |
Specifications
For more details about Rockfon Blanka® dB 41 please download the product datasheet or contact us.
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WhiteNCS S 0500-N
>99% light diffusion
L value: 94.5
Deep matt surface, perfect in critical side-light
Gloss: 0.8 gloss unit at 85° angle
No visible deflection in high humidity.
C/0N
Vacuum
Wet-scrub resistance: Class 4
Thermal resistance: R = 0,85 m2K/W
Certifications
CE Mark
Cradle to Cradle Certified
Indoor Climate label
Class M1
Sound absorption table
| Practical Sound Absorption Coefficient (αp) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Edge | Thickness mm | Suspension height mm | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | Sound absorption class | αw | NRC | |
| A24, D, E15, E24 | 35 | 200 | 0.40 | 0.60 | 0.90 | 0.95 | 1.00 | 1.00 | A | 0.90 | 0.90 | |
Installation videos
Need help or advice?
Have a question about this product or need guidance for your project? Send us a message and we’ll get back to you.
Interested in buying Rockfon Blanka® dB 41?
Get in touch with a local Rockfon office or find a distributor near you.