Sheetrock Plus 3 Pre-Mixed Lightweight Drywall Joint Compound, 3.5 Qt. eliminates the need for separate taping and topping compounds by combining qualities of both. It bonds like a taping compound and sands like a topping compound, making your drywall finishing process more efficient. This lightweight formula weighs 35% less than conventional compounds and requires only two coats over metal fasteners, corner bead, and trim. Plus 3 lower shrinkage, faster drying, easier sanding, and mixes quicker than traditional compounds. It provides excellent coverage of approximately 9.4 gallons per 1000 square feet of gypsum panels. To maintain its quality, protect the compound from zing. This pre-mixed compound is ready to use and has a set time of 24 hours, with a shelf life of 9 months. Model Number: 384013