Which statement correctly describes nominal lumber sizes and actual dimensions for cabinet parts?

• A. Nominal size is the common name (e.g., 2x4); actual size is the finished size used in assembly.
• B. Nominal size equals actual size; there is no difference.
• C. Nominal size is always larger than actual due to milling; not relevant to fit.
• D. Nominal size is the common name (e.g., 2x4); actual size is 1.5" x 3.5"; cabinet parts must be cut to the actual dimensions to fit.

Answer: (D)

Understanding lumber sizing helps you cut accurately for cabinet parts. The nominal size is the name used in trade and labeling, like a 2x4. After milling, the actual finished dimensions are smaller, and for a common example a 2x4 becomes about 1.5 inches by 3.5 inches. In cabinet work, you must cut and layout parts using those actual dimensions to ensure precise fit and proper joinery. The nominal name aids communication, but it’s the finished measurements you rely on when assembling. This is why the correct statement emphasizes that the actual size is what you use for cutting to fit, such as 1.5" x 3.5" for a typical 2x4.