Product Benefits

  • Acoustic absorption: αw = 1
  • Control of airborne particles: ISO 4
  • Resistance to mold Degree 0
  • Closed edges
  • High density panel
  • Ideal for areas requiring high-pressure cleaning, intensive maintenance and the use of detergents

Caracteristics & Performance

Acoustic absorption

Tonga® Ultra Clean HP A 22
  • αw = 1 : class A / NRC = 1


  • Light reflection: The light reflection coefficient is more than 84%.
  • White: L = 93,72% - according to ISO 11664-4.
  • Gloss: Matt - The gloss value is 0.25% - according to ISO 2813.
  • Light diffusion: 99,80% of the light is diffused.

Fire reaction

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

Fire resistance

  • 111 Tonga® Ultra Clean HP A 22 ceilings (600 x 600 mm) installed on a T24 Quick-Lock® grid (see test report) satisfy the requirements of Section CO13 in the French fire regulations for public-access buildings.
Classification Modules (in mm) Load-bearing structures Additional insulation
REI 30 600 x 600 Concrete, Steel No
REI 30 600 x 600 Timber, Concrete, Steel 160 mm Eurolène® 603 
  • 111 Tonga® Ultra Clean HP A 22 ceilings (600 x 600 and 1,200 x 600 mm) installed on a T24 Quick-Lock® grid (see test reports) are SF 30 according to Belgian standard NBN 713-020.

Humidity performance

  • 100% flat irrespective of the moisture content.

Control of Airborn particles

  • Tonga® Ultra Clean HP A 22 ceilings are Class ISO 4 according to ISO 14644-1.

Resistance to mould

  • Tonga® Ultra Clean HP A 22 ceilings prevent fungal growth: Degree 0 according to Method A in ISO 846.


Environment and health


  • Mineral wool is recyclable, and the vast majority of production waste is recycled. The recycled content of our Tonga® Ultra Clean HP A 22 panels is 45%.
  • For projects based on LEED®, BREEAM® and HQE™ Green Building certifications, EPD (Environmental Product Declarations) are available. Contact us.
  • Eurocoustic is certified to ISO 14001: 2015 "Environmental Management Systems".


  • Eurocoustic stone wool is certified by EUCEB (EUropean CErtification Board of mineral wool product).
  • Stone 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.: 0007-15.

Indoor Air Quality

  • Tonga® Ultra Clean HP A 22 products are classed A+.

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 HP A 22 ceilings are fitted on T15 - T24 grids.
  • Panels must be mounted on a grid system with a silicone seal and held in place with Euroclip HP anti-lift clips.
  • Tiles can easily 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 HP A 22 ceilings does not retain dust, which makes them easier to clean.
  • Tonga® Ultra Clean HP A 22 ceilings can be cleaned using a pressure washer (120 cycles up to 100 bar). Panels must then be held onto the grid with clips: Euroclip HP.
  • Other cleaning methods available: light brush, vacuum cleaner, compressed air, wet sponge (with or without detergent), wet steam + dry cloth and dry steam + dry cloth.
  • This type of cleaning will help extend the ceiling's service life.

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.

Read more


Reinvent your ceilings with our new colors

A selection of 40 colors

6 new graphical options

Custom Colors service

Print your own visuals

Visual consistency between tiles and grids