Sheetrock Firecode Core gypsum panels are the original, most widely used Type X gypsum panels on the market. The panels score and snap easily for quick installation, allowing painting, decorating and the installation of metal or wood almost immediately. They are composed of fire-resistant gypsum core encased in 100% recycled natural-finish face paper and 100% recycled liner paper on the back side. The face paper is folded around the long edges to reinforce and protect the core and the ends are square-cut and finished smooth. The long edges of the panels are tapered, allowing joints to be reinforced and concealed with a USG interior finish system.