This is a resistant drywall is an interior gypsum board consisting of a solid set, fire restive, Type X gypsum core enclosed in ivory-colored face paper and a strong liner back paper. This Type X board features a specially formulated core providing fire resistance ratings when used in tested assemblies. Long edges are slightly tapered, allowing joints to be reinforced and concealed with joint tape and joint compound. This Type X fire resistant drywall is available in a variety of lengths and widths.