USG Series 381110060 25Lb Bag Durabond 45 Min Joint Compound Powder, 25 lb, White Us gypsum 25Lb drbnd 45 joint compound 381110120 Chemically setting powder compound for drywall interiors/exteriors that permits same-day joint finishing and usually next-day decoration Provides hard, plaster-like surface when dry and is virtually unaffected by humidity