EXCELTONE (DL series) Comfort air ceiling TA4

Sound absorption feature is to soften unpleasant household sounds and indoor noise for ease of listening to TV sound and human voices in large living rooms, etc.

Key Attributes
Formaldehyde Absorption
Formaldehyde Labeling Exempted Product
4VOC Standards Compliant
The sound absorption coefficient value is based on the laboratory measurement. Measurements in actual sites vary depending on the structure and conditions.

Sound Absorption Effect to Suppress Excessive Sound Reverberation for Ease of Listening to TV Sound and Human Voices

Comparison of Reverberation Time Simulation Results (based on the sound absorption coefficient measurements on flooring)


When ceiling is finished with gypsum boards and vinyl cloth wallpaper

Reverberation time: Approx. 0.6 s/500 Hz (in 20-mat tatami room)

When ceiling is finished with CLEARTONE

Reverberation time: Approx. 0.6 s/500 Hz (in 20-mat tatami room)

Pinhole-processed Surface for Enhanced Sound Absorption


Comparison of Formaldehyde Absorption Performance Test Results*1

  • Environmental specifications for formaldehyde absorption test: Room temperature at 30℃, relative humidity at 50%, ventilation frequency 0.5 time/hour (in-house measurement), 6-mat tatami room, CLEARTONE 12S installation area rate 19%
  • Installation area rate: Installation area of the CLEARTONE 12S ceiling material divided by the entire surface area of room (including openings)
  • The measured test results in *1 are based on our laboratory measurement data and vary depending on installed furniture/interior equipment, temperature, airtightness, room size or plan, or other conditions.
<001> TA4001
<002> TA4002
<003> TA4003
<004> TA4004
<005> TA4005
<006> TA4006
<007> TA4007
<101> TA4101
<102> TA4102
<103> TA4103
<201> TA4201
<203> TA4203

Product Specification


Dimensions 9 mm thick, 303 x 606 mm
Packing material, quantity Cardboard case, 18 pieces (3.3 m2) per case
Base material Rock wool acoustic board
Surface finish Pinhole and rib processing (<201/203> only), emboss (except for <201/203>), and acrylic emulsion coating
Edge processing Tongue-and-groove joint on all sides
  • Quasi-noncombustible material certified by the Minister of Land, Infrastructure, Transport and Tourism, QM-9817
  • Eco Mark certified product (recycled materials used, 53% slag) No. 08123013
Formaldehyde regulations Labeling exempted product
Cross-sectional View The value in parentheses indicates the dimension on long sides.
  • The performance values and the certification labels are based on the Japanese test method and standards.
  • DAIKEN CORPORATION does not guarantee that the products listed here conform to the laws and regulations of the country or region where they are being used.