Do You Know The Lumber Grades? Construction Know HowMarch 31, 2015 . If you use hardwood you need to know this. The knowledge you will gain in this video could save you a lot of time and money. . This next video shows you how to select construction grade lumber. . Next Page » Pages: 1 2 3 Sharing Twitter0 Facebook0 Google +0 Linkedinactive){li-icon[type=linkedin-bug][color=inverse] .background{fill Email this article Print this article Tags construction lumber, hardwood lumber, lumber grades