Definition
Lumber that has been milled to standardized widths and thicknesses, such as 2x4, 1x6, or 4x4 nominal sizes. In the pallet industry, dimensional lumber refers to boards and timbers cut to the specific dimensions required for deck boards, stringers, blocks, and other pallet components. Consistent dimensional accuracy is critical for producing pallets that meet specifications and function reliably in automated handling systems.
Related Terms
Board Foot
A unit of lumber volume measurement equal to a board that is 1 inch thick, 12 inches wide, and 12 inches long (144 cubic inches). Board feet are the standard unit for measuring and pricing lumber in the pallet industry. The board footage of a pallet determines its lumber cost, and optimizing pallet designs to minimize board footage without sacrificing performance is a key cost reduction strategy.
Lumber Grade
A classification assigned to lumber based on its quality, strength, and appearance characteristics as determined by standardized grading rules. In the pallet industry, common grades include #1, #2, #3, economy, and pallet grade. Higher grades have fewer defects and greater structural integrity but cost more. Pallet designers select lumber grades based on the required performance, application, and budget for each pallet component.
Deck Board
The flat boards that form the top and bottom surfaces of a pallet. Top deck boards provide the platform on which goods are placed, while bottom deck boards (also called bottom boards) provide stability and allow the pallet to be stored on flat surfaces. Deck board thickness, width, and spacing directly affect a pallet's load capacity and suitability for different applications.
Stringer
A continuous, longitudinal solid or notched board that connects and supports the deck boards of a pallet. Stringers are the structural backbone of stringer-style pallets, running the full length of the pallet and providing the framework that holds deck boards in place. Most standard 48x40 pallets use three stringers — two along the outer edges and one down the center.
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Our glossary contains 165+ terms covering everything from pallet construction to compliance regulations and industry organizations.