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For use as a suspended ceiling with high sound absorption and for sound insulation between rooms if the partitions do not extend all the way up to the soffit. Also suitable for sound reduction of vertical noise, generated by ventilation, footsteps etc. Ecophon Combison Duo E has a recessed visible grid and a tegular edge design, creating a ceiling with a shadow effect that accentuates each tile and partially conceals the grid system. The visible surface of each tile is approx. 10 mm below the grid. Each tile is demountable.

The system consists of Ecophon Combison Duo E tiles and Ecophon Connect grid systems, with an approximate weight of 14 kg/m². The tiles are manufactured from high density glass wool, with a bonded gypsum board (13 mm) on the back of the tile. The visible surface has an Akutex™ FT coating and the edges are painted. For best performance and system quality, use Ecophon Connect grid and accessories. The grid is manufactured from galvanized steel.

General information
Specification data
Product Reference

Combison Duo E

Grid -

Interlocking Connect T24 with adjustable hangers/wire

Interlocking Connect T24 with direct fixing brackets

Grid colour

Black 01 matt

Grey 01 metallic for T24

White 01


Connect Angle Trim C1



Combison Barrier

Connect Lighting Clip

Combison XR

Standard product features


- Finish:

Akutex FT – The surface allows almost 100% of the sound energy to penetrate into and be absorbed by the glass wool.

- Colour:

White Frost (standard) - white 500, nearest NCS colour sample S 0500-N, 85% light reflectance (of which more than 99% is diffuse reflection).

- Size:

600 x 600 mm.

- Edges:


- Thickness:

55 mm.

Weight (including Connect grid system):

Approximately 14 kg/m².

Performance data:

- Indoor climate:

  • Recommended by the Swedish Asthma and Allergy Association.
  • Certified as A+ by French VOC.
  • Emission classification of building materials M1.

- Moisture resistance:

The tiles withstand a permanent ambient RH up to 70% at 25°C without sagging, warping or delaminating (EN 13964).

Fire safety:

Complies with BS EN 13501-1, Class A2-s1,d0.

Sound absorption:

200 mm deep system: In accordance with EN ISO 11654, Class A.

Sound Insulation:

39 dB Dnfw weighted normalized flanking level difference, ISO 10848-2.


44 dB Ceiling Attenuation Class, ASTM 1414, ASTM E413.

Articulation Class:

190 AC(1.5), ASTM E1111, ASTM E1110.


The ceiling system can withstand daily dusting, vacuum cleaning and weekly wet wiping.

Overall depth of system (minimum):

  • Adjustable Hangers: 110 mm.
  • Direct Fixing Brackets: 90 mm.

Depth for demounting tiles (minimum):

230 mm.

Product Options

Connect Lighting Clip C1 0231 for T24 C1:

Combison Barrier:

  • For use as acoustic barrier above partitions in plenum to improve the room to room sound insulation.
  • Material: Glasswool.
  • Colour: Aluminium foil surface.
  • Size: 1200 x 600 mm.
  • Thickness: 40 mm.
  • Weight: Approximately 3.5 kg/m².

Combison XR:

  • It is used to improve the room to room sound insulation.
  • It is installed on top of the suspended ceiling.
  • Material: Glasswool.
  • Colour: Black surface.
  • Size: 1500 x 600 mm.
  • Thickness: 50 mm.