



🔇 Elevate your space with quiet, clean, and sustainable style!
Armstrong DUNE 2x2 ceiling tiles combine superior acoustic noise reduction (NRC 0.50) and sound blocking (CAC 35) with ASTM E84 Class A fire resistance. Crafted from mineral fiber with 56% recycled content, these white tegular tiles feature HumiGuard Plus technology for sag, mold, and mildew resistance. Designed for easy drop-in installation on 15/16” grid systems, they cover 64 sq ft per carton and reflect 83% light to brighten interiors while maintaining durability and sustainability.













| Manufacturer | Armstrong |
| Part number | 1774A |
| Item Weight | 24.5 Kilograms |
| Product Dimensions | 60.96 x 60.96 x 0.1 cm; 24.49 kg |
| Item model number | 1774, 1774A |
| Size | 24"W x 24"W x 5/8"T |
| Color | White |
| Style | DUNE |
| Finish | Painted |
| Material | Mineral Fiber |
| Pattern | Solid |
| Shape | Square |
| Item thickness | 0.63 Inches |
| Installation Method | Lay-In |
| Item Package Quantity | 1 |
| Number Of Pieces | 16 |
| Speed Rating | Acoustical, HUMIGUARD Plus, BIOBLOCK Perf. |
| Coverage | 64.00 Square Feet |
| Plug Profile | Ceiling |
| Special Features | Worry-free Packaging |
| Specific uses | Indoor Use Only |
| Batteries Included? | No |
| Batteries Required? | No |
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