Data Sheet Sonex® Harmoni Acoustic Ceiling Tile Data Sheet
Installation Guide Acoustic Ceiling Tile for Suspended Grid Installation Guide
Cleaning Guide Acoustic Foam Cleaning Guide
LEED Statement Sonex® Acoustic Foam LEED Statement
  1. What is HPC Coating?
  2. HPC is a high-performance coating that is applied to acoustical melamine foam base. Our exclusive water based HPC formulation improves durability and protects the acoustical foam from dust and dirt, allowing the surface to be cleaned using a damp cloth. The HPC coating is especially appropriate for use high-traffic areas. HPC Premium extends the HPC coating further by offering a line of brilliant colors from which to choose.

    • HPC Coating for Wall and Ceiling Panels:
      • Coating is applied to the face of panels only.
    • HPC Coating for Hanging Baffles and Clouds:
      • The coating will be applied to all exposed edges and sides.
    • HPC Coating for Drop-In Ceiling Tiles:
      • All necessary edges will be coated to provide a finished appearance.

Sonex® Harmoni Acoustic Ceiling Tile

(2 customer reviews)


Size: 2' x 2'
Thickness: 2"
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Sonex® Harmoni Ceiling Tiles are the natural choice when looking to combine contemporary styling with excellent acoustical control at a moderate price.

The Sonex® Harmoni ceiling tiles are manufactured from a Class 1 fire-rated acoustic foam. Choose from a smooth flat pattern or a slightly sculpted appearance. These ceiling tiles are coated with an HPC Coated colors for a durable clean look. Install these ceiling tiles are by simply dropping them into any standard T-bar suspended ceiling grid system.

These are a perfect solution for classrooms, listening rooms, home theaters, conference rooms, retail stores and any other interior areas where ceiling tiles are used.


  • Fits all 15/16″ grid systems
  • Cleanable and durable HPC Coated Finish
  • Prevents dirt/dust penetration
  • Wipes easily with a damp cloth
  • Smooth or softly sculpted patterns
  • Exceptional acoustical performance
  • Mold-resistant, fire-retardant

Technical Information Sonex® Harmoni Ceiling Tile:

  • Size: 2′ x 2′ (14 tiles per box)
  • Thickness: 2″
  • Coverage: 56 square feet per box
  • Part Number: CT
  • Material: Open-cell melamine-based foam
  • Patterns: Tartan (Sculpted), Vista (Smooth)
  • Finish: HPC Coated
  • Density: 0.5 to 0.7 lbs./cubic ft. (ASTM D3574-77)
  • Fire Rating: Class 1 per ASTM E84
  • Microbial Growth: Passes UL 181, section 11
  • Fungus Resistance Rating: #0 per ASTM G21
  • NRC: 0.90 (ASTM C423-90a; Mounting Type E)
Sound Absorption (Hz)
ASTM C423-90a Type E Mount

Installation Method:

  • Quickly drops into any standard T-bar ceiling grid system
  • Cross-tees facilitate retrofitting of 24″ x 48″ ceiling grids
  • Press panels from above to set into grids (do not pull from face)
  • Installation is best done at the end of the construction project.
  • Use clean gloves to prevent soiling material.
  • Melamine foam is fragile and should be handled with care.
  • Do not install material of unacceptable quality.

For more information on our Sonex® Harmoni Acoustic Ceiling Tile,
call us at 800.782.5742 or contact our sales department.

Customer Reviews

2 reviews for Sonex® Harmoni Acoustic Ceiling Tile

  1. Verified Customer

    The deaden sounds as listed. They are easily dirtied and can damage quickly when trying to clean

  2. Verified Customer

    sound room