23-1/4 in. x 47-1/4 in. x 5/8 in. DUNE DYNAMAX 15/16 in. Square Lay-In Acoustic Mineral Fiber Ceiling Panels, 4271, White (8 Pieces per Pack, 58.78 sq. ft.) | CTA4271A

Armstrong DUNE Acoustic Mineral Fiber Ceiling Panels adapt well to diverse architectural needsfrom education and healthcare to retail and office spaces. The panels are engineered for Class A fire performance per ASTM E84, contributing to safe interior environments. With high light reflectance (81%) they help enhance ambient illumination and reduce energy usage. Resistance to humidity, mold, and scrubbing further ensures long term stability in real world conditions. The result is a ceiling solution that blends acoustic utility, design flexibility, and technical integrity.

• Constructed of mineral fiber for sound absorption
• Micro'perforated with a non'directional finish
• The panels deliver balanced acoustic performance with NRC ~0.50 and CAC up to 35
• Meets Class A fire rating per ASTM E84
• Resist humidity, mold, and surface wear