Wooden Pallet Buying Guide
Sizes, grades, construction, and weight capacity
A wooden pallet is the most common shipping platform in North America, and the right one depends on three things: size, construction, and grade. This guide covers the specifications that actually change price and performance so you can match a pallet to your load instead of overpaying for capacity you won't use.
Key takeaways
- The 48″ × 40″ GMA pallet is the U.S. standard — roughly 30% of all new pallets and the default for most freight.
- Block pallets allow true 4-way forklift entry; stringer pallets are 2-way (or partial 4-way when notched).
- Grade A pallets are inspected and like-new; Grade B (recycled) are repaired and cost 30–50% less.
- For international shipments you need ISPM-15 heat-treated (HT) pallets with the stamped wheat mark.
Standard pallet sizes
Pallet sizes are driven by what they carry and the trailers they ship in. A 53′ dry van is ~100″ wide inside, so a 48″ × 40″ pallet loads two-wide with room to spare. These are the sizes you'll encounter most:
| Size (in) | Common name | Typical use |
|---|---|---|
| 48 × 40 | GMA / GMA #1 | Grocery, CPG, general freight |
| 42 × 42 | Drum pallet | 55-gal drums, paint, chemicals |
| 48 × 48 | Drum / IBC pallet | Drums, wide loads |
| 48 × 45 | Automotive | Auto parts |
| 40 × 48 | GMA (rotated) | Beverage, retail |
| 36 × 36 | Beverage / dairy | Kegs, dairy |
| 48 × 42 | Chemical / military | Chemicals, defense |
Stringer vs. block pallets
Construction determines how a forklift or pallet jack can pick the pallet up — and how much abuse it survives.
Stringer pallets
Built on three parallel stringers (typically 2×4 boards) running the length of the pallet. A basic stringer pallet is 2-way — forks enter only from the two ends. Cutting notches into the stringers makes it partial 4-way: a forklift can enter all four sides, but a pallet jack still only works from the ends.
Block pallets
Built on nine blocks (corners, edges, center) instead of solid stringers, giving true 4-way entry for both forklifts and pallet jacks. Block pallets are stronger and more common in pooled systems (CHEP, PECO), but cost more.
| Stringer | Block | |
|---|---|---|
| Forklift entry | 2-way or partial 4-way | True 4-way |
| Pallet-jack entry | 2-way only | 4-way |
| Relative cost | Lower | Higher |
| Durability | Good | Better |
| Typical use | General freight | Pooling, automation |
Pallet grades and what they mean
Grade is the single biggest driver of price on the used market. “Recycled” does not mean low quality — most warehouses run almost entirely on repaired pallets.
| Grade | Condition | Price vs. new |
|---|---|---|
| Grade A (#1) | Inspected, no damage, may be repaired once. Like-new. | ~60–75% |
| Grade B (#2) | Repaired, plugged, or with companion stringers. Sound. | ~30–50% |
| Recycled / mixed | Functional, cosmetic wear, mixed sizes possible. | ~20–35% |
| New | Unused, consistent. | 100% |
Weight capacity
Pallet capacity is quoted three ways, and confusing them causes failures. A standard 48×40 GMA pallet roughly handles:
Heat treatment & ISPM-15 (export)
Any solid-wood packaging crossing an international border must comply with ISPM-15: the wood is heat-treated (HT) to a core temperature of 56°C for 30 minutes (or fumigated) to kill pests, then stamped with the IPPC “wheat” mark showing the country, treatment, and facility code. Domestic-only shipments don't require it. Kiln-dried (KD) wood is dried for moisture, which is not the same as HT — only the stamped HT mark satisfies customs.
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