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White square mineral-fiber ceiling tile with medium texture, 24 by 24 inches, 5/8 inch thick

Armstrong

Armstrong Ceiling Medallion Mineral Fiber 824 24x24 5/8

SKU CH-3JZM-HPV8E

A 24 by 24 inch mineral fiber ceiling tile with a noise reduction coefficient of 0.55, light reflectance of 0.82, and fire guard resistance

  • materialHAWA
  • weight63.68
  • Reduces echo with 0.55 noise reduction coefficient
  • Reflects 82% of light for brighter rooms
  • Fire Guard rated with class 35 attenuation
  • 41% recycled content supports sustainability goals
  • 16 tiles cover 64 sq ft per carton

Armstrong Ceiling Tile 24x24

The Armstrong Cortega 824 is a 24-by-24-inch mineral-fibre tile designed for standard 15/16-inch suspension grids. It suits commercial offices, schools and healthcare corridors that require a clean white finish and basic acoustic control.

Sustained acoustic and fire performance

With a Noise Reduction Coefficient of .55 and a Ceiling Attenuation Class of 35, the panel maintains consistent sound absorption and speech privacy over time. Fire Guard construction and ASTM E1264 compliance ensure the rating holds under continuous occupancy and code inspections.

Replaces older square lay-in panels

The tile upgrades existing 24-by-24 square lay-in systems where higher light reflectance of .82 and 41 percent recycled content are specified. The improvement is worth it when building standards call for better daylighting efficiency and documented sustainability credits.

Highlights

  • Reduces echo with 0.55 noise reduction coefficient
  • Reflects 82% of light for brighter rooms
  • Fire Guard rated with class 35 attenuation
  • 41% recycled content supports sustainability goals
  • 16 tiles cover 64 sq ft per carton

Specifications

BrandArmstrong
materialHAWA
weight63.68

Questions about this item

How much heat will the 5/8-inch mineral-fiber tile add to a room that runs all day?

The tile is rated for a temperature range of 32 to 49 degrees F, so it does not generate heat and will not raise the room temperature during continuous use.

What grid system must I already have for the 24-by-24-inch square lay-in edge to fit?

You need a standard 15/16-inch exposed T-bar grid; the tile drops straight into that grid without additional hardware.

Will the Noise Reduction Coefficient of 0.55 and Ceiling Attenuation Class 35 still perform if I keep my older 15/16-inch grid?

Yes, the acoustic ratings are achieved when the tile is installed in a standard 15/16-inch grid, so your existing grid will deliver the stated performance.

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