Armstrong World Industries, Inc. (AWI) is a global leader in the design and manufacture of innovative commercial and residential ceiling, wall and suspension system solutions. At home, at work, in healthcare facilities, classrooms, stores, or restaurants, Armstrong World Industries offers interior solutions that help to enhance comfort, save time, improve building efficiency and overall performance, and create beautiful spaces.

National Gypsum Gridstone, Seaspray and High Strength ceiling panels are a specialty gypsum board with increased uniformity and integrity of the gypsum core, making its sag resistance equivalent to 5/8" type X wallboard.

These Ceiling Panels install easily in standard 2' by 2' and 2' by 4' exposed grid systems and have a rigid gypsum core which provides extra resistance to sagging and warping.