Product Benefits

  • Acoustic absorption: αw = 0.95
  • Reaction to fire: A2-s1, d0
  • Control of airbone particles: ISO 4
  • Resistance to mold: Degree 0
  • Cleaning: five cleaning methods
  • Light reflection: > 84%
  • Humidity performance : Class C RH 95%, 30° C.
  • Painted edges and faces
  • Smooth, satin and bright finish
  • IAQ: A+ rating certified by Eurofin Indoor Air Comfort®.

Caracteristics & Performance

Acoustic absorption

Tonga® Ultra Clean A 20
  • αw = 0.95 : class A / NRC = 0.95


  • Light reflection: The light reflection coefficient is superior to .
  • White: L = 93% - according to ISO 11664-4.
  • Gloss: Matt - The gloss value is
  • Light diffusion: > 99 % of the light is diffused.

Fire reaction

  • According to EN 13501-1: Euroclass A2-s1, d0.

Humidity performance

  • Class C RH 95%, 30° C.

Control of Airborn particles

  • Tonga® Ultra Clean A 20 ceilings are Class
    • Les plafonds Tonga® Ultra Clean A 20 sont classés ISO 4 selon la Norme ISO 14644-1.

    according to ISO 14644-1.

Resistance to mould

  • Tonga® Ultra Clean A 20 ceilings prevent mould and bacteria growth: Degree 0 according to ISO 846 (methods A, B and C).

Performance in Healthcare establishments

  • Tonga® Ultra Clean A 20 ceilings satisfy microbiological requirements for type 4 :
Areas Control of airborne particles Kinetics of particle decontamination Microbiological cleanliness Tested strains
4 ISO 4 CP(0,5)5 M1 Methicilin resistant Staphylococcus aureus, Escherichia coli, Candida albicans, Aspergillus brasiliensis


Environment and health


  • Mineral wool is recyclable, and the vast majority of production waste is recycled. The recycled content (in conformity with the norm ISO 14021) of the product Tonga® Ultra Clean A 20  is 48%.
  • The production is certified to ISO 14001: 2015 "Environmental Management Systems".


  • Eurocoustic mineral wool is certified by EUCEB (EUropean CErtification Board for mineral wool product).
  • Mineral wool panels are manufactured with fibers exempt from the carcinogenic classification (European Regulation 1272/2008 as amended by European Regulation 790/2009). According to the International Agency for Research on Cancer, mineral wool is not classifiable as to its carcinogenicity to humans (Group 3).

CE Marking

  • DoP no.: G006

Indoor Air Quality

  • Tonga® Ultra Clean A 20 products are classed A+.
  • Eurofins Indoor Air Comfort® Gold certified.

Installation & Cleaning


  • Installation must conform to the requirements of the DTU 58.1 code of practice, the NF P 68203-1 and 2 standards and other applicable standards and codes of practice according to the type of room.
  • You are advised to ensure that air can circulate between the rooms and the plenum to balance the temperature and pressures on each side of the ceiling.
  • Tonga® Ultra Clean A 20 ceilings are fitted on T15 - T24 grids.
  • Tiles can be cut with a craft knife without generating any noise or dust.
  • The direction in which the panels should be installed is indicated on the back of the panels.
  • Contact us if any mineral wool is to be laid in the plenum.


  • The painted surface of Tonga® Ultra Clean A 20 ceilings does not retain dust, which makes them easier to clean.
  • Tonga® Ultra Clean A 20 ceilings can be cleaned using light brush, vacuum cleaner, compressed air, wet sponge (with or without detergent), dry or wet steam + dry cloth.
  • This type of cleaning will help extend the service life of Tonga® Ultra Clean A 20 ceilings.

Colors & Dimensions


Our commitments

Fast and flexible logistics, technical assistance, customer service: Saint-Gobain Eurocoustic accompanies you on your projects on a daily and long-term basis.

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Since July 1, 2013, the manufacturer has indicated the CE marking on its products and provided Declarations of Performance (DoP) in pursuance of the Construction Products Regulation.
The declaration of performance expresses the performance of construction products in relation to the essential characteristics of those products in accordance with the relevant harmonized technical specifications. Declarations include the following performance characteristics:

  • Reaction to fire
  • Release of formaldehyde
  • Flexural strength
  • Acoustic absorption coefficient (αw)
  • Thermal conductivity

The Declaration of Performance (DoP) alone provided by the manufacturer is sufficient evidence of the fire reaction performance of our products and can be used in place of the fire classification test reports.