LxH

LxH refers to a specific measurement of lumber length, commonly encountered in the United States. The "LxH" notation, typically seen in lumber yards or specifications, indicates the cross-sectional dimensions of a piece of lumber in inches, rather than its length. The first number represents the nominal thickness (height) and the second number represents the nominal width. For example, a "2x4" is a piece of lumber that is nominally 2 inches thick and 4 inches wide. It is important to note that these are nominal dimensions, and the actual, finished dimensions of the lumber are slightly smaller due to the milling and drying process. The actual thickness is typically 1.5 inches and the actual width is 3.5 inches for a 2x4. LxH measurements are fundamental for construction, carpentry, and woodworking projects, allowing builders and DIY enthusiasts to select the appropriate materials for their needs. While the length of the lumber is usually specified separately (e.g., 8-foot 2x4), the LxH designation consistently defines the lumber's profile.