National Gypsum's Gold Bond Gridstone Clean Room Gypsum Ceiling Panels are designed for controlled environments that require high levels of cleanliness, durability, and fire resistance. Manufactured with a dense, noncombustible gypsum core and a smooth, washable surface finish, these 5/8 in. ceiling panels provide a clean, uniform appearance ideal for laboratories, healthcare facilities, food processing areas, and other sensitive applications. The panels fit standard 15/16 in. ceiling grid systems and maintain dimensional stability under varying temperature and humidity conditions, reducing sag and surface irregularities. National Gypsums Gridstone Clean Room panels meet ASTM C1396 standards for gypsum board and are engineered for use in fire-rated assemblies, supporting code-compliant construction. Their non-porous surface resists mold, bacteria, and dust accumulation, promoting better indoor air quality and easier maintenance. Designed for both functionality and performance, these panels deliver reliable ceiling solutions for facilities where contamination control and long-term stability are essential.