Master
Master™ B
System range
Size, mm
600x600
Glued •
Thickness 40
M113
System and product description
For applications where the minimum possible overall depth of system is required and where strict demands are made on good acoustics and speech intelligibility. The tiles are bonded edge-to-edge directly to the soffit surface, creating a ceiling with a smooth appearance. The bevelled edges create a narrow groove between each tile. The tiles are not demountable.

The tiles are manufactured from high density glass wool. The visible surface is available with three different surface coatings to meet different sound absorption needs: alpha, beta and gamma. The back of the tile is covered with glass tissue. The edges are painted. The weight is approximately 5 kg/m².
Acoustics
Acoustic:
product Master B/alpha Master B/beta Master B/gamma
o.d.s mm 40 40 40
absorption class A C E
Sound Absorption: Test results according to EN ISO 354.
Classification according to EN ISO 11654.
Sound Insulation: Not applicable.
Sound Privacy: Not applicable
αp Practical sound absorption coefficient
Master_B_abs1 Frequency Hz
— Ecophon Master B/alpha 40 mm o.d.s.
···· Ecophon Master B/beta 40 mm o.d.s.
--- Ecophon Master B/gamma 40 mm o.d.s.
o.d.s = overall depth of system
Technical info
Accessibility: The tiles are not demountable.
Cleanability: Daily dusting and vacuum cleaning. Weekly wet wiping.
Light efficiency: White Frost, nearest NCS colour sample S 0500-N, 85% light reflectance (of which more than 99% is diffuse reflection). Retro reflection coefficient 63 mcd*m-2lx-1. Gloss < 1.
Influence of climate: The tiles withstand a permanent ambient RH up to 95% at 30°C without sagging, warping or delaminating (ISO 4611).
Indoor Climate: Certified by the Indoor Climate Labelling, recommended by the Swedish Asthma and Allergy Association, and can be used in rooms classified as ISO class 6/M3.5.
Environmental influence: Granted the Nordic Swan eco-label. Fully recyclable.
Fire safety: The glass wool core of the tiles is tested and classified as non-combustible according to EN ISO 1182. See Technical properties, Fire safety.
Country Class Standard
Europe EN 13501-1 A2-s1,d0
Mechanical properties: Additional live load has to be secured to the soffit.
Installation: Installed according to system range.
For Acousticians
"Acoustical evaluation of rooms requires several room acoustic descriptors. Reverberation time alone is not enough!" Erling Nilsson / Acoustics Specialist Ecophon
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