Dimensional Lumber Sizes For Building and Remodeling- rough sawn lumber dimension chart pdf ,26/6/2020· Typical dimensional lumber: two-by-fours and four-by-fours. Sheet goods are not considered to be dimensional lumber. Nominal and actual dimensions differ except in some older homes. Nominal dimension is the name of the lumber: two-by-four, for example. Actual dimension is the size: 1 1/2 inches by 3 1/2 inches, for example.What is Rough Sawn Lumber | Full-Dimensional Lumber11/6/2016· A common 2 by 4 is really about 1.5 by 3.5 inches. After the wood loses most of its water, it goes down in size. The Advantages Of Rough-Sawn Lumber. Air-dried lumber can be purchased at certain lumber yards and companies that deal with a variety of hardwoods and softwoods.