Which term corresponds to the 2-4 inch thickness category in lumber grading?

Which term corresponds to the 2-4 inch thickness category in lumber grading?

• A. Boards
• B. Lumber
• C. Dimension
• D. Planks

Answer: (C)

Think about size categories. Lumber is sorted by cross‑section, and the standard framing sizes—like 2x4 or 2x6—fall into a group called dimension lumber. Those common thicknesses from about 2 to 4 inches are what define this category, which is why this term is the best fit for the 2-4 inch thickness range. Boards and planks describe forms of wood stock rather than this standard sizing: boards are usually thinner, and planks are thicker and wider, while lumber is the broad term for all wood stock. So the 2-4 inch thickness is best labeled as dimension lumber.

Think about size categories. Lumber is sorted by cross‑section, and the standard framing sizes—like 2x4 or 2x6—fall into a group called dimension lumber. Those common thicknesses from about 2 to 4 inches are what define this category, which is why this term is the best fit for the 2-4 inch thickness range. Boards and planks describe forms of wood stock rather than this standard sizing: boards are usually thinner, and planks are thicker and wider, while lumber is the broad term for all wood stock. So the 2-4 inch thickness is best labeled as dimension lumber.