USG Boral Gypsum Board Standard Core is asbestos free products. Produced in standard dimension 1200mm x 1220mm composed of a noncombustible gypsum core and encased in a heavy natural-finish paper on the face side and a strong liner paper on the back side. The face paper is folded around the long edges to reinforced and protect the core. Board ends are square cut and finished smooth. Long edges of panels are recessed (tapered) allowing joints to be reinforced and concealed with a joint treatment. USG Boral recommend to use Sheetrock® All Purpose Joint Compounds for joint treatments and skim coating.