SHEETROCK 381110 Bag Powder Durabond 45, 25 lbSheetrock brand durabond setting type joint compounds are chemically setting powder compounds for drywall interiors and exterior soffits that permit same day joint finishing and, usually, next day decoration to ensure rapid job completion and earlier occupancy. They provide a hard, plaster like surface when dry and are virtually unaffected by humidity. They are also ideal for heavy fills. 25 lb Bag powder Durabond 45 Wallboard joint compound They