USP Pallet Encyclopedia
The complete reference for pallet buyers, supply-chain managers, and procurement teams. Every term explained, every specification defined, every compliance rule documented.
GMA Pallet
The Grocery Manufacturers Association 48x40 pallet is the North American standard, riding under about 80 percent of US retail distribution. Formally the 48x40 four-way stringer pal...
ISPM-15
ISPM-15 (International Standards for Phytosanitary Measures No. 15) is the global regulatory framework requiring wood packaging material used in international trade to be treated t...
Block Pallet
A block pallet uses short wooden blocks (typically nine, arranged in a 3x3 grid) between top and bottom decks to provide true four-way forklift and pallet-jack entry from any side....
Stringer Pallet
A stringer pallet uses three parallel wood members (stringers) running the length of the pallet as base supports. Standard GMA is a stringer pallet with notched stringers to allow ...
Plastic Pallet
A plastic pallet is molded from HDPE, PP, or other polymers to create a reusable, hygienic, cleanable alternative to wood. Plastic pallets excel in returnable closed-loop programs,...
Presswood Pallet
A presswood pallet is compression-molded from wood fibers bonded with adhesive under heat and pressure. Also called molded-fiber or engineered wood pallets, presswood weighs 40-50 ...
Pallet Jack
A pallet jack (also pallet truck or pump truck) is a manual or electric material-handling tool used to lift and move loaded pallets short distances. Standard pallet jacks require f...
Forklift Pallet Compatibility
Forklift and pallet type must match. Class III walkie-rider pallet jacks work with notched-stringer or block pallets. Class II sit-down electrics and Class IV IC counterbalances wo...
Pallet Load Rating
Pallet load ratings distinguish static load (weight on a pallet at rest, typically racked), dynamic load (weight while moving, on a forklift or pallet jack), and edge-racking load ...
Pallet Wood Species
Standard US pallets are built from mixed hardwood (oak, maple, poplar, gum) or softwood (southern yellow pine, spruce-pine-fir). Hardwood pallets are stronger but heavier and more ...
Pallet Moisture Content
Pallet wood moisture content ranges from 18 to 30 percent depending on treatment and storage. Kiln-dried pallets are typically 12-19% moisture. Green (untreated) wood pallets may b...
Deck-Board Configuration
Deck-board configuration specifies the number, thickness, spacing, and orientation of the deck-boards on a pallet's top and bottom surfaces. Standard 48x40 GMA uses 7 top deck-boar...
Nail Pattern
Pallet nail patterns specify the number, spacing, size, and type of nails used to attach deck-boards to stringers. Standard GMA uses 6 nails per stringer per deck-board, spaced acr...
Chamfered Deck-Board
A chamfered deck-board has a beveled edge on the leading side (where a pallet-jack enters). Chamfering allows smoother pallet-jack entry, reduces wear on both the pallet and the ja...
Pallet Recycling
Pallet recycling is the process of collecting used pallets, sorting them by grade, repairing damage, and remanufacturing or reselling them into supply chains. The US pallet recycli...
Pallet Buy-Back
Pallet buy-back is a supplier's commitment to purchase excess pallet inventory from customers at pre-negotiated pricing. Buy-back typically applies to GMA whites (once-used pallets...
Pallet Grade
Pallet grade classifies recycled pallets by condition. Grade A recycled is remanufactured to near-new quality with replaced deck-boards and stringers as needed. Grade B has more vi...
Retailer Pallet Compliance
Retailer pallet compliance refers to the specific requirements each major US retailer maintains for inbound pallet quality. Costco requires block pallets or 4-way stringer with spe...
Costco Pallet Specification
Costco requires four-way block pallets with specific dimensional and construction standards for inbound freight. Standard Costco spec is 48x40 block pallet with 8 top deck-boards m...
Walmart Pallet Specification
Walmart accepts standard 48x40 GMA pallets in new or recycled grades across most categories. Walmart's core spec allows both block and notched-stringer four-way pallets. Damaged pa...
Amazon FBA Pallet Specification
Amazon FBA requires 48x40 GMA pallets in new or Grade A recycled condition, with specific rules on maximum pallet height (100 inches including pallet), maximum weight, and shrink-w...
Pallet Cost Per Unit
Pallet cost per unit depends on pallet type (new vs recycled, standard vs custom), grade, volume tier, region, and current lumber pricing. National average pricing in 2026 runs $24...
Softwood Lumber Futures
Softwood lumber futures traded on the CME as the LBR contract are the leading indicator for pallet pricing. Approximately 60-70 percent of a new pallet's cost is wood. When lumber ...
Pallets Per Truckload
A standard 53-foot dry van holds approximately 500 stacked 48x40 GMA pallets when loaded to full cube. Pallet stack height and pallet weight determine actual loadable quantity. Non...
Emergency-Load Coverage
Emergency-load coverage is a supplier's commitment to deliver pallets on very short notice - typically same-day or next-day - when a buyer's primary supplier misses a delivery. Ent...
