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ACOUSTICAL CEILINGS & WALLS | United Kingdom

Sierra OP 4115M

INFORMATION

With its fine texture and white appearance Sierra OP meets todays requirements for a modern visual along with a good balance of sound absorption and sound attenuation.


Item # 4115M


Visual Characteristics

Surface Sierra
Edge detail
Board
Grid Face
24/35
Colour White
Dimensions 600 x 600 mm
Material Type Mineral

Compatible Suspension Systems

Exposed 24mm Grid System Universal Main Runners 24
Exposed 35mm Grid System Main Runners 35


Sustainability Characteristics

VOC Emissions A+
Armstrong Recycling Programme Y
Recycled Content (%) 51%
Recyclable (%) 100%
Formaldehyde Emissions E1

Technical Characteristics

Sound absorption (alpha w) 0.90
Sound absorption European Classification A
Sound absorption (NRC) 0.85
Sound Attenuation Dnfw (dB) 25
Sound Reduction Index Rw(db)
12
Rain noise test  
Light reflectance (%) 84
Humidity resistance (RH%) 95
Thermal conductivity (W/mK) 0.036
Weight (kg/m2) 2.40
Fire reaction
EEA Euroclass A2-s1,d0
Cleanability With a moist cloth
Air Quality ISO 5

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