Gold Bond® brand Shaftliner XP® Gypsum Board consists of a mold-, mildew-, moisture- and fire-resistant gypsum core with a specially designed, 100-percent recycled PURPLE® paper on  the face and back sides. The face paper is folded around the long edges to reinforce and protect the core, and the ends are cut square and finished smooth. Long edges are double beveled for ease of installation.

Use it to construct lightweight fire barriers for cavity shaftwalls (1-4 hr.) and area separation fire walls (2 hr.).