Sheetrock Plus 3 Pre-Mixed Lightweight Drywall Joint Compound, 4.5 Gallon 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 simpler and more efficient. This compound weighs 35% less than conventional compounds and requires only two coats over metal fasteners, corner bead, and trim. Plus 3 lower shrinkage, faster drying times, easier sanding, and mixes more quickly than traditional compounds. It is pre-mixed for convenience and should be protected from zing. With a coverage of approximately 450 square feet per 4.5-gallon pail, it is i for a variety of drywall projects. Model Number: 381466-048