Plaster Internal
5.75-Gallon Topping Pre-Mixed Joint Compound
5.75 gallons is 48lb.
A low-shrinkage, easily applied and sanded product recommended for second and third coats over BEADEX Ready-Mixed Taping and All-Purpose Compounds. Bond strength, however, is insufficient for embedding tape or for first coat metal beads and trim.
Already mixed with water in the factory, but can add additional water as needed.
http://www.homedepot.com/p/BEADEX-Brand-5-75-Gallon-Topping-Pre-Mixed-Joint-Compound-385254/202328854?N=5yc1vZard1#specifications $7.75 for 5.75 gallons
Brochure: http://www.homedepot.com/catalog/pdfImages/98/9848b9d7-53f3-4da4-8722-09d4902edd1c.pdf
MSDS: http://www.homedepot.com/catalog/pdfImages/4b/4b65e1a6-6a7c-48b7-989e-b5345c838d34.pdf
There is a lighter weight version available, but it is best to use the non-lite version.