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.
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